Americans visiting Great Britain often seek out authentic London nightlife, but after a few days of pubs and chi-chi wine bars, some find themselves wanting a taste of home. American Bar offers just that, but in a classic sense. The Savoy Hotel's buzz-worthy bar features the mood and music of the 1920s, from the cool American jazz played by the pianist down to the snazzy cocktails served at the bar. Some knowing patrons even claim the bartenders mix the best martinis in town. While the vibe is laid back and casual, be advised that jackets and ties are common here. TUBE: Charing Cross