Holmead's Burying Ground

The L. Ron Hubbard House, also known as the Original Founding Church of Scientology, is a writer's house museum and former Scientology church located at 1812 19th Street NW in the Dupont Circle neighborhood of Washington, D.C., United States. Public tours are given on a regular basis. The operating Founding Church is now located at 1424 16th Street for services, bookstore and classes. The home served as the residence of Scientology founder L. Ron Hubbard from 1955 until 1959, during which time he incorporated the Founding Church of Scientology and performed the first Scientology wedding. The building is a contributing property to the Dupont Circle Historic District, a neighborhood listed on the National Register of Historic Places.

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.

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.

The American Geophysical Union (AGU) is a 501(c)(3) nonprofit organization of Earth, atmospheric, ocean, hydrologic, space, and planetary scientists and enthusiasts that according to their website includes 130,000 people (not members). AGU's activities are focused on the organization and dissemination of scientific information in the interdisciplinary and international fields within the Earth and space sciences. The geophysical sciences involve four fundamental areas: atmospheric and ocean sciences; solid-Earth sciences; hydrologic sciences; and space sciences. The organization's headquarters is located on Florida Avenue in Washington, D.C.

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.

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 March 30, 1981, United States president Ronald Reagan was shot and wounded by John Hinckley Jr. in Washington, D.C. as he was returning to his limousine after a speaking engagement at the Washington Hilton. Hinckley believed the attack would impress actress Jodie Foster, with whom he had developed an erotomaniac obsession. Reagan was seriously wounded by a .22 Long Rifle bullet that ricocheted off the side of the presidential limousine and hit him in the left underarm, breaking a rib, puncturing a lung, and causing serious internal bleeding. He was close to death upon arrival at George Washington University Hospital but was stabilized in the emergency room, then underwent emergency exploratory surgery. He recovered and was released from the hospital on April 11. No formal invocation of sections #3 or #4 of the Constitution's 25th amendment (concerning the vice president assuming the president's powers and duties) took place, though Secretary of State Alexander Haig stated that he was "in control here" at the White House until Vice President George H. W. Bush returned to Washington from Fort Worth, Texas. White House press secretary James Brady, Secret Service agent Tim McCarthy, and DC police officer Thomas Delahanty were also wounded. All three survived, but Brady suffered brain damage and was permanently disabled. His death in 2014 was considered a homicide because it was ultimately caused by his injury.Hinckley was found not guilty by reason of insanity on charges of attempting to assassinate the president. He remained confined to St. Elizabeth's Hospital, a DC psychiatric facility. In January 2015, federal prosecutors announced that they would not charge Hinckley with Brady's death, despite the medical examiner's classification of his death as a homicide. Hinckley was released from institutional psychiatric care on September 10, 2016.

The Real World: D.C., (occasionally known as The Real World: Washington D.C.), is the twenty-third season of MTV's reality television series The Real World, which focuses on a group of diverse strangers living together for several months in a different city each season, as cameras follow their lives and interpersonal relationships. It is the fifth season of The Real World to be filmed in the Mid-Atlantic States region of the United States. The season featured eight people who lived in a house in Dupont Circle. Washington, D.C. was officially announced as the location for the newest season on June 10, 2009. Filming began on July 2, 2009 and completed on October 12, 2009. The season's December 30, 2009 premiere was watched by 1.9 million viewers. The March 31, 2010 season finale was watched by 1.1 million viewers, the record low at the time for a season finale of The Real World. The finale was immediately followed with a reunion special, The Real World: Washington D.C. Reunion. Overall the season averaged 1.5 million viewers a week and consisted of 14 episodes. According to MTV's President of Programming, Tony DiSanto, "The charged atmosphere of Washington D.C., the center of our country's social and political change, will provide an electric setting for this next season of The Real World. We are thrilled to be filming our classic franchise in the heart of where history is being made ... it adds a whole new dimension to the great characters and drama our viewers expect and love from The Real World." Washington, D.C. Mayor Adrian Fenty welcomed the production, pointing to the impact of young people on the national scene.The Washington Capitals hockey team, singer Melissa Etheridge and Washington Post cartoonist Tom Toles make guest appearances this season, in which they interact with the cast. President Barack Obama also appears in two episodes in which cast member Andrew Woods, an aspiring cartoonist, attends a press conference with Washington Times senior correspondent Joe Curl as part of Woods' internship with the newspaper, and when cast member and LGBT rights activist Mike Manning attends the October 10, 2009 Human Rights Campaign dinner at which Obama spoke. Manning also meets with Congressman Jared Polis of Colorado and Congressman James P. Moran of Virginia during the course of his work for the HRC.

Nareit is a Washington, D.C.-based association representing a large and diverse industry that includes equity real estate investment trusts (REITs), mortgage REITs (mREITs), REITs traded on major stock exchanges, public non-listed REITs, and private REITs. Nareit is the voice for REITs and publicly traded real estate with an interest in U.S. real estate and capital markets. Nareit is also an informational resource for policymakers in countries around the world that have introduced or are considering introducing REITs. It is recognized as the leading public resource on the REIT industry, and it provides performance data on REITs dating back to 1972. Nareit’s mission is to actively advocate for REIT-based real estate investment with policymakers and the global investment community. Nareit’s members are REITs and other businesses throughout the world that own, operate, and finance income-producing real estate, as well as those firms and individuals who advise, study, and service those businesses.[5] It is run by an independent executive board[6] led by President and CEO Steven A. Wechsler.[7]

The Rwandan Ambassador to the United States is the official representative of the Government of Rwanda to the Government of the United States and is head of the Embassy of Rwanda in Washington, D.C.

The Sierra Leonean Ambassador in Washington, D.C. is the official representative of the Government of in Freetown to the Government of the People's Republic of United States.