Secret London

The World’s Tallest And Longest Tunnel Slide Is Hidden Inside This London Landmark – And It Boasts Twelve Thrilling Twists

This Stratford structure is hiding a rather hefty secret in the form of the longest and tallest tunnel slide in the world.
The Sun

UK could get huge new zipline across city in bid for more visitors after world’s biggest tunnel slide flopped

BRITS could be set to welcome a new mega zipline after the world’s biggest tunnel flopped. The Olympic Park’s iconic ArcelorMittal Orbit was crowned the world’s longest tunnel after it was built in ...