The gallery and exhibition spaces at Somerset House stay open until 8pm on Wednesdays, Thursdays and Fridays (last admission 7pm). In recent years the venue has also hosted an outdoor film screen in summer and a wonderfully atmospheric ice-rink in winter.
Every Friday the National Portrait Galley does its own verison of Friday Lates, an art-focused mixture of music, art classes, talks and film screenings. Get a drink from the bar and try your hand at some life drawing.
The Whitechapel Gallery keeps its galleries open until 9pm every Thursday. It also takes part in 'First Thursdays', a monthly event where galleries across East London open their doors late and put on talks, tours and more.
On Fridays, the Royal Academy stays open until 10pm (last entrance 9:30pm). The gallery's major shows are often very popular, so don't miss this extra chance to see them.
The Wellcome Collection puts on some great temporary exhibitions - and they're all free. You can see them until 10pm on Thursdays, along with enjoying their popular programme of super brainy talks and seminars.
If you struggle to know what to wear when going out in the evenings, head to London's Fashion and Textile Museum for a bit of inspiration. The Bermondsey venue stays open until 8pm on Thursdays, with the last admission 45 mins before closing.
This quirky museum and former home of artist Frederic Leighton is open on selected evenings for ticketed events, normally artsy talks (check out the schedule if you're a fan of Victorian art in particular) and genteel live music.
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