United States | Washington, D.C.
Walk by many of the foreign embassies in Washington on a fun and interesting walking tour. Once known as Millionaires’ Row, many of the large homes along this stretch of Massachusetts Avenue have been converted into embassies. DC by Foot has put together a great self-guided walking tour: you can read the tour from your phone or download an app that provides audio. Alternatively, you can hire a guide if you prefer.