London's museums make value possible, but the city is large. Group days by area and allow a park between major indoor stops.
Parent tip: Free general admission does not cover every exhibition; book popular experiences and check TfL child rules.
Read our London family guide: areas, where to stay and tips
A grand South Kensington museum known for its dinosaur galleries, the blue whale skeleton in Hintze Hall and its earth and volcano displays. It is big and popular, so focus on a few galleries and take breaks.
A large South Kensington museum covering space, engineering, flight and medicine, with interactive galleries for younger visitors. It sits next to the Natural History Museum, but one museum is plenty for a single visit with small kids.
A historic castle and fortress on the Thames, home to the Crown Jewels, the White Tower and the Yeoman Warders who lead tours. Much of the visit is outdoors on walls and courtyards, so plan for walking and some stairs.
A walk-through tour of the real sets, costumes and props from the Harry Potter films at Leavesden, outside London. Mostly indoor and best for fans; tickets must be booked ahead for a set entry time.
Transport history and interactive exhibits make this a strong match for train, bus and vehicle interests.
Design-led exhibits and play suit creative younger children.
London's historic zoo in Regent's Park. Families can see gorillas at Gorilla Kingdom, Asiatic lions at Land of the Lions, Sumatran tigers through floor-to-ceiling glass, England's biggest penguin pool at Penguin Beach, a walk-through rainforest with sloths and monkeys, a butterfly house and meerkats.
Royal Botanic Gardens with great Victorian glasshouses, a Treetop Walkway 18 metres up in the canopy and a Children's Garden with trampolines, climbing frames and a 4-metre-high canopy walk where children learn how plants grow. Plenty of lawn and woodland for a long, unhurried day.
A city-view moment without filling a whole day.
The museum offers family trails and age-aware visit resources; a parent described it as a surprise hit.