Tiber Creek

The Babcock Lakes (38.8901119°N 77.0385880°W / 38.8901119; -77.0385880) were a series of water ponds formerly located near the Washington Monument in Washington, D.C., before the area became the National Mall. In 1878, they were designated as fisheries by the United States Fish Commission, in an effort to increase availability of commercial fish in America. While extant, the lakes played a key role in introducing carp into the United States. By 1896, some 2.4 million carp had been distributed from the lakes to restock fish supplies in both North and South America.By 1911, the lakes had been covered by land dredged from the Potomac River in the expansion of West Potomac Park.

Ripps Island was an island located in the Potomac River in the northwest quadrant of Washington, D.C., in the United States. It was located at the mouth of Tiber Creek, in the vicinity of today's Constitution Gardens.

The First National Jamboree was scheduled to take place from August 21 to August 30, 1935, to celebrate the Silver jubilee of the Boys Scouts of America who were founded on February 8, 1910. However, due to an outbreak of polio at the time in Washington, D.C. and the neighboring states, it was canceled and pushed back to 1936. Due to various factors, it was pushed one more year and finally took place from June 30 to July 9, 1937. 25,000 Scouts attended the event taking place on the National Mall at the foot of the Washington Monument using equipment loaned by the United States Army. It saw Scouts from all around the United States arriving by train as well as representatives of several foreign countries' scouting groups who traveled by boat and sometimes by foot. The event was celebrated by the entire city with Federal buildings being opened for visits, Mount Vernon offering daily visits, and many local residents volunteering their time. U.S. President Roosevelt took part in the celebration and a special message from Lord Baden-Powell was broadcast from London to the Scouts during the Jamboree calling for International Friendship. It was a display of American patriotism with American flags on display, the event taking place in the American capital in front of the White House and taking place the week of the 4th of July.

Excluding the White House, the Lockkeeper's House, C & O Canal Extension is the oldest building on the National Mall, built in 1837 at what is now the southwest corner of 17th Street, NW and Constitution Avenue, NW, near Constitution Gardens. The building dates to a period when the south end of 17th Street, NW was a wharf and Constitution Avenue, NW was the location of a section of the Washington City Canal, which connected the Potomac and Anacostia rivers. An eastward extension of the Chesapeake and Ohio Canal (C&O Canal) met the Potomac River and the Washington City Canal at a canal lock.The 350 square foot house served the canal lock keeper, who collected tolls, recorded commerce, maintained the canal and managed traffic.

The World War II Memorial is a memorial of national significance dedicated to Americans who served in the armed forces and as civilians during World War II. Consisting of 56 pillars, representing U.S. states and territories, and a pair of small triumphal arches for the Atlantic and Pacific theaters, surrounding an oval plaza and fountain, it sits on the National Mall in Washington, D.C., on the former site of the Rainbow Pool at the eastern end of the Reflecting Pool, between the Lincoln Memorial and the Washington Monument. Its initial design was submitted by Austrian-American architect Friedrich St. Florian. Opened on April 29, 2004, it was dedicated by President George W. Bush on May 29, 2004. The memorial is administered by the National Park Service under its National Mall and Memorial Parks group. More than 4.6 million people visited the memorial in 2018. The memorial consists of 56 granite pillars, each 17 feet (5.2 m) tall, arranged in a semicircle around a plaza with two 43-foot (13 m) triumphal arches on opposite sides. Two-thirds of the 7.4-acre (3.0 ha) site is landscaping and water. Each pillar is inscribed with the name of one of the 48 U.S. states of 1945, as well as the District of Columbia, the Alaska Territory and Territory of Hawaii, the Commonwealth of the Philippines, Puerto Rico, Guam, American Samoa, and the U.S. Virgin Islands. The northern arch is inscribed with "Atlantic"; the southern one, "Pacific." The plaza is 337 ft 10 in (102.97 m) long and 240 ft 2 in (73.20 m) wide, is sunk 6 feet (1.8 m) below grade, and contains a pool that is 246 feet 9 inches by 147 feet 8 inches (75.2 m × 45.0 m).The memorial includes two inconspicuously located "Kilroy was here" engravings. Their inclusion in the memorial acknowledges the significance of the symbol to American soldiers during World War II and how it represented their presence and protection wherever it was inscribed.On approaching the semicircle from the east, a visitor walks along one of two walls (right side wall and left side wall) picturing scenes of the war experience in bas relief. As one approaches on the left (toward the Pacific arch), the scenes begin with soon-to-be servicemen getting physical exams, taking the oath, and being issued military gear. The reliefs progress through several iconic scenes, including combat and burying the dead, ending in a homecoming scene. On the right-side wall (toward the Atlantic arch) there is a similar progression, but with scenes generally more typical of the European theatre. Some scenes take place in England, depicting the preparations for air and sea assaults. The last scene is of a handshake between the American and Russian armies when the western and eastern fronts met in Germany.

The Rainbow Pool was a reflecting pool located on the National Mall in Washington D.C., USA. It was designed by landscape architect Frederick Law Olmsted Jr., and was situated between the Lincoln Memorial Reflecting Pool (to the west), and 17th Street NW (to the east). The pool was renamed the Rainbow Pool on October 15, 1924, after it was noticed that its 124 nozzles created a "perfect rainbow" when turned on.In 2001 it was integrated into the National World War II Memorial, which features the pool located in roughly the same spot. The builders of the National World War II Memorial asserted that the memorial would not destroy the Rainbow pool; rather it would be sunk lower into the ground to better fit the structure of the World War II Memorial. This was a controversial development, as the Rainbow Pool has a central, visible location between the Washington Monument and Lincoln Memorial. The debate over the World War II Memorial's occupation of the space had to be resolved by legislation from the U.S. Congress in 2001 which allowed the building of the memorial to continue.

The Second Division Memorial is located in President's Park, between 17th Street Northwest and Constitution Avenue in Washington, DC, United States. The Memorial commemorates those who died, while serving in the 2nd Infantry Division of the U. S. Army. The artist was James Earle Fraser. It was dedicated on July 18, 1936, by president Franklin D. Roosevelt.It was rededicated in 1962, by Gen. Maxwell Taylor, with two wings added for the battle honors of World War II and the Korean War. The flaming sword symbolizes the defense of Paris from the German advance.

Queen Isabella, also known as Queen Isabella (1451–1504), is an outdoor sculpture of Isabella I of Castile, installed outside the Pan American Union Building of the Organization of American States at 17th Street and Constitution Avenue NW in Washington, D.C., in the United States.

The John Paul Jones Memorial is a monument in West Potomac Park in Washington, D.C. The memorial honors John Paul Jones, the United States' first naval war hero, father of the United States Navy, the only naval officer to receive a Congressional Gold Medal during the American Revolutionary War, and whose famous quote "I have not yet begun to fight!" was uttered during the Battle of Flamborough Head.

The Pan American Union Building is the headquarters for the Organization of American States. It is located at 17th Street N.W. between C Street N.W. and Constitution Avenue, Northwest, Washington, D.C.

The Van Ness Mansion was completed for John Peter Van Ness and Marcia Van Ness in 1816 by Benjamin Henry Latrobe on 17th Street, Washington, D.C. They entertained the Madisons, James Monroe, George Washington Parke Custis and John Tayloe III at their mansion. The mansion was described as the "finest house in America". It was built on land that had been owned by Marcia's father, David Burnes, who left 500 acres along the Potomac River to Van Ness. It was one of the most expensive houses in the country, fit with hot and cold running water, a modern feature at the time, and the mansion was the first residence in the city to have that luxury. Latrobe added a feature designed to maintain a sense of privacy when food was conveyed to dining rooms. Servants accessed rotating servers from a hallway that allowed them to deliver food without entering the room. He installed them previously at the Adena Mansion in Chillicothe, Ohio. It had the country's largest and coolest wine vault. Latrop said that the Van Ness Mansion was "the best house I ever designed". It overlaid his "American rational-configuration on the kind of English residential model that impressed him during his work for and study with S. P. Cockerell."Latrobe also worked with John Peter Van Ness on the reconstruction of Washington, D.C. public buildings. Van Ness was a commissioner of the Capitol reconstruction commission, along with Richard B. Lee and Tench Ringgold. The mansion degraded over time. In 1907, the mansion was razed and the Pan American Union Building was built on the site. The stables, also designed by Latrobe, were not demolished at that time. The stuccoed building existed was located at 18th and C Streets.

Columbus Memorial Library is located in the headquarters of the Organization of American States in Washington, D.C.The library offers extensive collection of books and periodicals that date back to 1535.