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London's Natural History Museum is a cathedral of nature, housing over 70 million specimens, and visited by more than 4 million people every year. From strange creatures that inhabit the ocean depths, to meteorites from far away worlds, the secrets of the past and discoveries of the future lurk in galleries and backrooms, waiting to be discovered.

Were early Britons cannibals? Discover their Ice Age lifestyle in our Web Exclusive Video: Cave People.

Find out what went on at the museum during World War Two in our Web Exclusive Video: Room for Spies.

Check out all the Natural History Museum objects below to discover more secrets revealed through video and interactive features.

Secrets revealed in this episode

British Cannibals?

Does a skull prove that early Britons were cannibals?

The Tank Room

What floats in a million glass jars?

Cursed Amethyst

Does it bring misfortune to all who touch it?

Secret Weapons

In WWII, what spy technology was invented at the NHM?

Dodo Bird

Was the extinction of this flightless bird inevitable?

Barbary Lions

Why did Barbary Lions once live at the Tower of London?