U STREET. A relatively new memorial, this sculpture is dedicated to the more than 208,000 African American soldiers who fought in the Civil War. The focal point of the paved plaza is the dramatic Spirit of Freedom sculpture, showing black soldiers heading for war. The sculpture, by Ed Hamilton, is thought to be the first major piece by a black sculptor to be placed on federal land in DC. Surrounding the piece on three sides is the Wall of Honor, which is inscribed with 209,145 names of those who fought as part of the US Colored Troops. METRO: U Street/African-Amer Civil War Memorial/Cardozo

DOWNTOWN. Located in the gardens outside the National Academy of Science, this12-foot bronze statue depicts the genius seated on steps in a slouched position and holding a paper inscribed with three equations based on his most significant theories. Oversized and easily accessible, Einstein attracts climbing children and tourists looking for a photo op. METRO: Judiciary Sq

ADAMS-MORGAN. This historic church, founded in 1821 by a group of men that included John Quincy Adams, has as its major tenet a commitment to fostering social justice. The building that houses the present congregation was constructed in 1924 and shares design similarities with St. Martin-in-the-Fields, a London church. The sanctuary is also home to a Reieger organ, a spectacular instrument that was installed in 1969 and has enriched countless services since then. METRO: Columbia Heights

FOGGY BOTTOM. At this site, American foreign policy is crafted. Tours focus on the Diplomatic Reception Rooms, which are lavishly furnished with 18th century American furniture, paintings and decorative arts. The place is brimming with fascinating historical items, including the desk on which the Treaty of Paris was signed and a bowl that belonged to Paul Revere. Reservations are required for visits, and summer reservations must be made at least three months in advance. Not recommended for children under 12. Strollers are not permitted. METRO: Foggy Bottom

DOWNTOWN. [All tours have been suspended until further notice.] Built in 1836, this lovely building is a National Historic Landmark. Treasures inside include the elegant suite used by Lincoln's treasury secretary, the marble Cash Room used for Grant's inaugural gala (noted for its 1,500-pound chandelier), and an 1864 burglar-proof vault. METRO: Metro Center