Found right in the heart of downtown San Francisco near Union Square, Ruby Skye is a large 15,000 square foot nightclub capable of holding up to 900 people. Open every Friday and Saturday for techno and house events with other nights reserved for special nights, the venue has two floors and four rooms, housed in a restored Victorian building that dates back to the 1890s. In addition to its club capacity, Ruby Skye also functions as a private events space complete with restaurant and chef.