Washington Heights Historic District

The Kalorama Park and Archeological Site is a park and archeological site in the Kalorama Triangle neighborhood of northwest Washington, D.C. Bounded by Kalorama Road, Columbia Road, 19th Street, and the rear property lines of buildings on Mintwood Place, the 3.17-acre (1.28 ha) triangular park includes roughly 2 acres (0.8 ha) that contains remnants of a 19th-century farm. The park includes a central lawn, a basketball court, playgrounds, a community garden, winding paths, and a field house. The present-day park sits on land previously inhabited by the Nacotchtank tribe. Years later the Holmead family owned the land and sold it to the Hines brothers. Irish immigrant John Little purchased the property in the 1830s and established a farm. He built a large manor house in the 1850s which stood until 1937. Little owned over a dozen slaves, one of whom was Hortense Prout. She briefly escaped in 1861, possibly with help from people associated with the Underground Railroad, but was apprehended and returned to Little's custody. After slavery in the District of Columbia was abolished in 1862, Little continued operating his farm until his death. His daughters later sold portions of his farm to brewer and real estate investor Christian Heurich and lumber merchant Thomas W. Smith. In the early 1900s, neighborhood residents formed a group, later named the Kalorama Citizens Association, to advocate for a park. A few decades later this finally came to fruition when the National Capital Planning Commission purchased the two properties previously owned by Heurich and Smith. The park was established in 1947 and named in honor of the citizens group. It is administered by the District of Columbia Department of Parks and Recreation. Due to archeological tests resulting in the discovery of remnants of the manor house along with household artifacts, the site was nominated for historic landmark status. The Kalorama Park and Archeological Site was added to the District of Columbia Inventory of Historic Sites in 2010 and National Register of Historic Places in 2016. Because of the site's connection with Prout's escape, the park is also included in the National Underground Railroad Network to Freedom.

The Embassy of Gabon in Washington, D.C. is the diplomatic mission of the Gabonese Republic to the United States. It is located at 2034 20th Street Northwest, Washington, D.C. in the Adams Morgan neighborhood.The ambassador is Michael Moussa-Adamo.

Oak Lawn (later known as the Dean Estate, Temple Heights, and Temple Hill) was a large house and wooded estate that once stood on the edge of today's Dupont Circle and Adams Morgan neighborhoods in Washington, D.C. The estate was bounded by 19th Street, Columbia Road, Connecticut Avenue, and Florida Avenue. Previously called Widow's Mite, the estate was originally several hundred acres, but by the 19th century, had been reduced to around 10 acres (4 ha). The house was built around 1820 and was greatly expanded in 1873 by Thomas P. Morgan, one half of the eponym of the Adams Morgan neighborhood. A large oak tree, nicknamed the Treaty Oak, was reportedly hundreds of years old and stood just a few yards from the house. Oak Lawn was located on a hill. Due to its expansive views of the city, the estate was sought after by local developers. The surrounding neighborhoods evolved into bustling residential and commercial areas. However, Oak Lawn remained a wooded, undeveloped tract until the 20th century. In 1922 the land was sold to a Masonic group who wanted to build a large temple complex. However, due to the Great Depression and a lack of funds, the plan was canceled. In 1940, a local developer selected Frank Lloyd Wright to design a massive mixed-use project there (Crystal Heights) that would include 14 towers and a hotel: that project was also canceled. During the next 20 years, multiple plans for Oak Lawn never came to fulfillment. The Oak Lawn house was demolished in 1948, and the Treaty Oak cut down in 1953. In the late 1950s and early 1960s, the Washington Hilton and two commercial buildings were built on the property that had been home to the old estate.

The Treaty Oak was a 350–400-year-old oak tree that once stood on the Oak Lawn estate in Washington, D.C. The estate was previously called Widow's Mite and owned by the Holmead and Nourse families. It included a large four-story Second Empire house that owner Thomas P. Morgan had expanded. The estate was bounded by 19th Street, Columbia Road, Connecticut Avenue, and Florida Avenue, on the edge of today's Dupont Circle and Adams Morgan neighborhoods. The oak tree earned its nickname due to local legends that a treaty was signed there between early settlers and Native Americans. Despite massive development in the surrounding neighborhoods during the late 19th century and early 20th century, the estate remained a wooded area and was sought by local developers. In 1922 a Masonic group purchased the estate for what was then a significant amount of money to build a massive complex that would include temples. The plans were never carried out, and in 1940 the site was chosen for the large Crystal Heights mixed development designed by Frank Lloyd Wright. That plan was also abandoned. The tree remained until 1953 when it was felled for a planned commercial development. The land where the tree and house once stood is the site of the Washington Hilton, an apartment building, and two office buildings. At the time of its destruction, the Treaty Oak was reportedly the largest oak tree in the Washington, D.C. area.

Wyoming Apartments is an historic apartment building, located at 2022 Columbia Road, Northwest, Washington, D.C. in the Kalorama neighborhood.

The Museum of the Palestinian People (MPP) is a museum featuring the history, art, and culture of the Palestinian people. It is located in the Dupont Circle neighborhood of Washington, D.C. The museum was founded in 2019. It is the second Palestinian-themed museum in the United States and the first in Washington, D.C. The museum is open Friday, Saturday, and Sunday. It includes work by Sari Ibrahim Khoury.

On the evening of April 25, 2026, gunshots were fired near the main security screening area for the annual White House Correspondents' Dinner at the Washington Hilton in Washington, D.C. President Donald Trump, First Lady Melania Trump, Vice President JD Vance, and members of the Cabinet were evacuated from the event by the Secret Service. It was the first White House Correspondents' Dinner that Trump attended as president. Law enforcement officials identified the suspect as 31-year-old Cole Tomas Allen, who allegedly intended to target multiple Trump administration officials. Allen was arrested near the screening area outside the banquet hall after running past the security checkpoint while armed. Investigators believe he was staying at the hotel as a guest. One officer was struck in his bullet-resistant vest and was admitted to a hospital but was later released. The suspect was taken to the hospital for a single knee injury despite not being hit by gunfire. A manifesto that officials attributed to Allen criticized Trump administration policies, referred to himself as the "Friendly Federal Assassin", and stated that he intended to target administration officials. The manifesto did not name Trump, but stated "I am no longer willing to permit a pedophile, rapist, and traitor to coat my hands with his crimes". Allen was charged with four criminal counts, including attempting to assassinate a United States president, carrying a possible sentence of life in prison if convicted. He pleaded not guilty to all of the charges on May 11. The dinner was rescheduled for July 24, at the Waldorf Astoria hotel. The incident was the third apparent attempt on Trump's life since 2024, following the July 2024 attempt near Butler, Pennsylvania, and the September 2024 attempt at Trump's golf club in West Palm Beach, Florida. The Washington Hilton was the site of the attempted assassination of Ronald Reagan in 1981.

The Strivers' Section Historic District is a historic district located in the Dupont Circle neighborhood of Washington, D.C. Strivers' Section was historically an enclave of upper-middle-class African Americans, often community leaders, in the late 19th and early 20th centuries. It takes its name from a turn-of-the-20th-century writer who described the district as "the Striver's section, a community of Negro aristocracy." The name echoes that of Strivers' Row in Harlem, a New York City historic neighborhood of black professionals. The district is roughly bounded by Swann Street and the Dupont Circle Historic District on the south, Florida Avenue and the Washington Heights Historic District on the north and west, and the Sixteenth Street Historic District on the east. The historic district is mostly composed of apartment buildings and rowhouses. Notable inhabitants have included Frederick Douglass, Lewis Henry Douglass, and Calvin Brent. Architectural styles represented in Strivers' Section include Italianate, Queen Anne, Romanesque Revival, and Second Empire. Architects and real estate developers whose works are in the district include George S. Cooper, Thomas Franklin Schneider, B. Stanley Simmons, Harry Wardman, and Frank Russell White. The historic district, which includes around 430 contributing properties, was added to the District of Columbia Inventory of Historic Sites in 1983 and listed on the National Register of Historic Places in 1985.

The Washington Hilton is a hotel in Washington, D.C. It is located at 1919 Connecticut Avenue, N.W., roughly at the boundaries of the Kalorama, Dupont Circle, and Adams Morgan neighborhoods. The Washington Hilton, located on the former site of the Oak Lawn estate, was designed by architect William B. Tabler and developed by Uris Buildings Corporation. A groundbreaking ceremony was held on June 25, 1962 and the hotel officially opened three years later, on March 25, 1965. The hotel structure features a distinctive double-arched design. It long sported the largest pillar-less hotel ballroom in the city. Numerous large events have been regularly hosted at the Hilton Washington, including the annual dinners of the White House Correspondents Association and the Radio and Television Correspondents Association, as well as the National Prayer Breakfast. During the 1960s and 1970s, the hotel hosted a number of big musical acts for concerts in their large ballroom, including The Doors and Jimi Hendrix. In 1972 it was home to the first International Conference on Computer Communications which demonstrated new ARPANET technology. The hotel was the site of the assassination attempt on President Ronald Reagan by John Hinckley Jr. on March 30, 1981. The attempt occurred at the hotel's T Street NW exit. As a result, the hotel is sometimes colloquially referred to by locals as the "Hinckley Hilton".The hotel was renamed the Hilton Washington in 1998. It was purchased in June 2007 by an investment firm jointly owned by former professional basketball star Magic Johnson. From 2009-2010 it underwent a $150 million renovation. When that was completed, the hotel returned to its original name.

Crystal Heights (also referred to as Crystal City) was a design by American architect Frank Lloyd Wright for a hotel, apartment, and shopping complex in Washington, D.C. The project would have been built on one of the largest remaining undeveloped tracts in the city, known as the Oak Lawn estate or Temple Heights, on the edge of the Adams Morgan and Dupont Circle neighborhoods. The site was bounded by 19th Street, Columbia Road, Connecticut Avenue, and Florida Avenue, all in the northwest quadrant. One version of the design called for 2,500 hotel rooms, small apartments, parking for 1,500 cars, shops, and a 1,000-seat theater – a diversity of uses almost never seen in structures of the time – all within a complex consisting of a broad base covering the whole site topped by 15 towers. The proposal was defeated primarily by zoning requirements that prevented a multi-purpose structure at the site and forbade towers from rising more than 110 feet. The planned central tower would have been 240 feet high (73 m) and the remaining buildings 14-stories tall. After his design was rejected, Wright heavily criticized local officials and the National Capital Planning Commission. Today, the site is occupied by the Washington Hilton, commercial buildings, and an apartment building.

Madam's Organ Blues Bar is a restaurant and nightclub located at 2461 18th Street NW in Washington, D.C.'s Adams Morgan neighborhood. A local landmark, the bar is popular for its nightly live music, especially blues and bluegrass. Regular performers include Bobby Parker, Ben Andrews, Catfish Hodge, and Bob Perilla & Big Hillbilly Bluegrass. The bar offers billiards, has a rooftop deck and serves soul food. Notable regular patrons have included Euan Blair, son of Tony Blair, and the late Soviet dissident artist Alexandr Zhdanov. Hungarian Ambassador András Simonyi was not only a regular patron but also performed with his band "Coalition of the Willing" for his Washington Diplomatic farewell party attended by a Washington A-list including European diplomats, United States Secretary of Homeland Security Michael Chertoff, and Prime Minister Ferenc Gyurcsány. > Barbara and Jenna Bush have also been spotted there. Madam's Organ was described as a favored hangout by Playboy and Stuff, and was featured on the Wild On! travel series on E!.

The Ambassador Theater was a theater located at 2454 18th Street and Columbia Road, NW, Washington, D.C. It was most notable for a six-month period in the 1960s when it was a psychedelic concert and dance hall.