606 Club
Established in 1976, this Chelsea jazz club embraced speakeasy style long before it became a nightlife trend. Buzz the door near the far end of King's Road and you'll find a basement venue showcasing mainstream and contemporary jazz by well-known U.K.-based musicians. Alcohol can only be served if you order a "substantial meal" as well, so allow for an extra £30. Reservations are advisable. Lunchtime jazz takes place on select Sundays; call ahead.