
Whinlatter Forest
England's only true mountain forest: Gruffalo sculptures on the trail, the WildPlay adventure area, red squirrels if you are lucky, and Go Ape for older kids. Views over Derwentwater thrown in.
Keswick, Cumbria

An anti-gravity room where water runs uphill, an Ames room that shrinks the grown-ups, and a hologram gallery - cheap, indoor, and precisely one hour long, which in Keswick rain is worth its weight.
Photograph the Ames room illusions; the effect lands hardest on screen. Then back out into the town for cake, mission accomplished.
Looking for more museums & science near Keswick?

England's only true mountain forest: Gruffalo sculptures on the trail, the WildPlay adventure area, red squirrels if you are lucky, and Go Ape for older kids. Views over Derwentwater thrown in.

A working slate mine at the top of Honister Pass with guided tours deep into the mountain, and via ferrata routes up the crag for the brave. Tours take all ages; the climbing starts at ten.

A proper zoo day near Bassenthwaite: birds of prey flying displays, meerkats, animal feed for a pound, and indoor soft play for when the Lakes weather does its thing. No booking needed.