Photo: Wikimedia CommonsOne of Portos longest-running alternative clubs, Plano B spreads across two floors of a townhouse on Rua Candido dos Reis, with house and techno downstairs and hip-hop and funk upstairs. By day it doubles as a gallery and events space, so the crowd skews arty and friendly. Doors open late, so line up dinner and drinks first. Entry usually includes a drink token, and it only really fills up well after midnight.