Washington

One of the world's largest natural history museums, housing over 145 million specimens across geology, paleontology, anthropology, botany, and zoology.

A 2-mile tree-lined open space anchoring Washington, DC's cultural core.

Historic riverfront district along the Potomac with 18th-century rowhouses, cobblestone streets, and waterside parks.

Byzantine and medieval art museum housed in a 1920s mansion with formal gardens designed by Beatrix Farrand.

Founded in 1789, the nation's oldest Catholic university crowns the hill above M Street.

An 1816 neoclassical mansion built for Martha Custis Peter, great-granddaughter of Martha Washington.

A steep 75-step staircase descending from Prospect Street to M Street, famous as the location where a key scene from the 1973 horror film The Exorcist was filmed.

The main commercial spine of Georgetown, lined with Federal-era and Victorian storefronts, independent bookstores, fashion boutiques, and cafés.

A terrace of five Federal-style townhouses built in 1817 on N Street, representing some of Georgetown's finest early architecture.

Established in 1849, this hilltop burial ground contains graves of prominent 19th and 20th-century figures, landscaped with mature trees and Gothic Revival monuments.

Built in 1765, this is the oldest building in Washington, D.C.