Tate Modern
Housed in a dramatic former power station on the Thames, this is one of the world's biggest modern art museums - and free to get into for the permanent collection, with tickets only needed for the big temporary shows. Kids gravitate to the vast, cathedral-like Turbine Hall, which regularly hosts huge, playful art installations perfect for running around in. Pick up a free drawing kit or sound-based family trail from the family desk at weekends, or join the daily free guided tours if the little ones can sit still that long. UNIQLO Tate Play runs family-friendly art activities every weekend, and there's a Baby Care Room if you're travelling with very young children. Cross via the Millennium Bridge from St Paul's for the most dramatic approach.
- Very buggy friendly with massive lifts, though it gets packed on weekends.
Times change seasonally — always check before you set off.
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