Capitol Hill is the political heart of Washington, D.C. As the seat of the U.S. Congress, it is the center of the American legislative process. Visitors can visit the magnificent Capitol Building and learn about American political history and government operations. Although advance reservations are required to visit the interior of the Capitol Building, external tours and walking around the Capitol Building are free, making it a must-see for exploring American history and politics.

The National Mall is an open national park with many iconic American buildings, including the Washington Monument, the Lincoln Memorial, and the Vietnam Memorial. You can also visit several free Smithsonian museums, such as the Museum of Natural History and the Air and Space Museum. The National Mall is a great place to learn about American history and culture, and the green and open space also provides a great place to relax. Whether you are strolling or taking pictures, the National Mall is a must-visit place for a trip to Washington.

The Washington Monument is a landmark located in Washington, D.C., the capital of the United States. It was built to commemorate the American President George Washington. The monument is made of marble, granite and bluestone gneiss. It is hollow inside and is the tallest stone building in the world. You need to make an appointment in advance to climb to the top, but the exterior visit is free.

The Lincoln Memorial is a national memorial built to commemorate the 16th President of the United States, Abraham Lincoln. It is located on the west side of the National Mall in Washington, D.C., in a straight line with the Congress and the Washington Monument. The Lincoln Memorial is a neoclassical building with a Greek Doric temple as the main facade decoration, designed by Henry Bacon.

The National Museum of Natural History in Washington, D.C. is one of the largest natural history museums in the world and is located on the National Mall in Washington, D.C. The museum's collection contains more than 145 million specimens, including plants, animals, fossils, minerals, rocks, meteorites, human remains and human cultural artifacts, making it the world's largest natural history collection. The museum is dedicated to showcasing the natural wonders and biodiversity of the Earth while providing educational and scientific resources. Admission is free, making it a great place for families and nature lovers to explore the natural world.

The National Air and Space Museum is the world's largest aerospace museum, located on the National Mall in Washington, D.C. It displays many historic aircraft and spacecraft, including the Wright brothers' aircraft and the Apollo 11 lunar module. The museum introduces the history and technological achievements of aerospace through rich exhibitions and interactive experiences.

The White House in Washington is the official residence and office of the President of the United States. It is located at 1600 Pennsylvania Avenue in Washington, DC. Since its completion in 1792, it has been the official residence of the President of the United States and a symbol of the government. The White House has a classic neoclassical architectural style and its exterior was designed by George Washington. Visitors can visit and take photos from the outside, but reservations are required for the inside visit.Tours of the exterior are free, but tours of the interior require reservations through your MP and may need to be arranged months in advance.

The Jefferson Memorial is located on the National Mall in Washington, D.C., and commemorates Thomas Jefferson, the third president of the United States. Built in a neoclassical style, the dome structure was inspired by the Pantheon in Rome. Inside, there is a statue of Jefferson and inscriptions of his famous speeches and letters, highlighting his contribution to American independence and democratic ideals.

A historic neighborhood known for its unique charm and old buildings. Georgetown features charming cobblestone streets, Victorian-style houses, and a bustling commercial district. It is a popular place for shopping and dining, with many upscale shops, restaurants, and cafes. Georgetown University is also located here, adding to the academic atmosphere of the community. The picturesque Georgetown Canal provides a leisurely walking experience.