Kew Gardens is a magnificent World Heritage Site covering 300 acres with over 30,000 species of plants. A few of the specimens are represented by models but Kew is able to represent many examples of primitive plants from its own living collections.
Families with younger children will get a kick out of the human-scale badger sett, the fish in the Marine Display aquarium downstairs in the Palm House and the Climbers and Creepers indoor play area for accompanied three to nine year olds (sessions, bookable on arrival, last 20mins). The Treehouse Towers outdoor play area for three to 11 year olds offers rope bridges, giant swings, zip wires and slides geared towards teaching children about trees. New in summer 2014 was a Log Trail, full of balancing beams and other activities.
For grown-ups, there are two permanent galleries of botanical art - the Marianne North Gallery and the Shirley Sherwood Gallery of Botanical Art, the first in the world dedicated solely to botanical art - and the Xstrata Treetop Walkway, one of Kew's most impressive attractions: 18m up in the air and 200m long, it provides a fresh perspective on the sweet chestnuts, limes, deciduous oaks and other trees of Capability Brown's woodland.
Note: both the Temperate House and Evolution House are closed for renovation until 2018.
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