McDonough Arena

Built in 1796 as a neighborhood pub, the City Tavern is the oldest commercial structure in the city, and the second oldest building following the Old Stone House. The interior is a beautiful trip back to the 18th century, but it is closed to the public, except for private event bookings.

Most famous for its role in 1944, when world leaders convened here to draw up the United Nations charter. But that's not why you should come. The extensive gardens are the biggest draw; they are extraordinarily beautiful—almost palatial—and peaceful, uncrowded. The best time to come is a Spring weekday, when the gardens are practically empty, and the trees are budding with bright pinks and purples. The mansion, built in 1800 for John Calhoun (one of the most powerful senators in American history), houses an extraordinary collection of pre-Columbian and Byzantine art. And rest assured a stroll around the mansion would be worthwhile even without the exhibits. Don't thank Sen. Calhoun for all this though; he was rather a boor. The second owners, the Blisses, a wealthy couple from the U.S. Foreign Service, are responsible for the magnificent landscaping and collections. If you are up for a little homework, look for Stravinsky's Dumbarton Oaks Concerto, commissioned by Mrs. Bliss for their 30th wedding anniversary.

Made famous by the 1973 horror movie, the "Exorcist Steps" run between Prospect and M St just west of where the Key Bridge deposits people into D.C. In addition to grisly ends to men and devils, the steps are popular among Georgetown students looking for a serious workout during their daily jog along the Potomac.

This quadrangle was the original land purchase upon the founding of the university. The chapel (1893) at the south end, beautiful inside and out, is best known to the world for its role in The Exorcist, where the priests discovered the defaced statue of the Virgin Mary. The oldest building on the quad is Old North (1795) on the north side, from which Abraham Lincoln gave his speech in 1861 to Union soldiers stationed here. The best time to visit is undoubtedly at the end of the cherry blossom season, when the petals are beginning to fall throughout the quad.

It's hard to notice anything on this very large quadrangle other than the enormous Healy Hall (1897), a national historic landmark, whose high-set Flemish-Romanesque towers loom over the neighborhood, and even the city. It is named after Patrick Healy, who had an impressive career of firsts: the first African-American president of a major U.S. university, the first African-American with a PhD, and the first African-American Jesuit priest. During the day you can wander inside the building to appreciate the interior—Gaston Hall at the north end of the third floor should be your main objective, as it is both beautiful and has hosted endless visits by foreign and domestic heads of state. In the summer, these visits are often free to the public and not very well attended, so you might be able to get in and talk foreign policy with a king or two. Check the university's events website.

A striking, award-winning modern building (2006), it is home to the Swedish Embassy. It bills itself as the "crown jewel of the Swedish presence in the U.S.," hosting a large exhibition space open to the public and devoted principally to current international issues dear to the Swedes.