San Francisco nightlife is diverse and enticing. Each neighbourhood's bars, clubs and lounges have a unique atmosphere, and there are multiple cafés and performing arts venues to enjoy. As San Francisco after dark is known for its novelty and constant innovation, be sure to check online for special events, once-off performances and pop-up dining that may coincide with your travel dates.For electronic music clubs, hip hop and art lounges try the SoMa area, while the Mission and Marina districts are good for bars. Gay-friendly bars and clubs are prevalent in the Castro area, and North Beach boasts neon strip joints and bars. The San Francisco Opera stages a free performance of Opera in the Park, followed by occasional free performances throughout the city. Ballet and modern dance can be seen at the Cowell Theater and Marina Boulevard. The Civic Center/Hayes Valley area is known for brilliant live performance venues and is the go-to spot for ballet, opera and jazz.If there is one live performance to see in San Francisco it has to be Beach Blanket Babylon, the longest running musical revue in history. It's a unique show that has achieved cult status with its witty spoofs of popular culture and show-stopping tunes. Beach Blanket Babylon was founded by the late Steve Silver and has become a San Francisco institution, popular with locals and delighted visitors alike. The venue is at Club Fugazi in North Beach.There is plenty to do after hours in San Francisco and visitors are bound to have a tough time choosing from the utter abundance of weird and wonderful, original and entertaining night time activities.