First built in 1875, the O2 ABC is a nightclub and live music location located at the heart of Glasgow. One of two O2 venues in the city (along with the O2 Academy), it fits almost 1,500 through its doors (while it's sister building the ABC 2 almost 1,000) for club nights and gigs throughout the year. If you fancy a drink, you're in luck - it also boasts five bars too!