This former military airfield's claim to fame came from a lucky accident during the Second World War.

The site of one of the largest non-nuclear explosions in history, created when a massive bomb dump accidentally exploded.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

A rotting air force base is now home to rare birds and scarce plants.

This beach runway is off limits during high tide.

This purpose-built dinosaur museum is shaped like a pterodactyl and holds fossils that were found in its very village.

This battery powered bell has been ringing since 1840 and is one of the worlds longest running science experiments.

Quirky Welsh observatory unites art and science.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

Where the sleeping monsters of Scotland's oil industry are left to rust.

A remarkably well preserved tower dating all the way back to the Iron Age.

A midnight snack that lights up the night.

This Manchester laundromat is hiding something.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

Geodesic dome luxury retreat in the Scottish Highlands.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.