The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

Famously misunderstood wonder of the ancient world

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of the largest underground systems runs under Canada's largest urban center.

This psychedelic tourist trap is a leisurely descent into madness.

An collection of Chinese propaganda posters from 1949 to 1979.

The once highest point in China blends symbolic design with a kick of adrenaline.

An out-of-place slice of France, smack in the middle of Shanghai.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Come for the flowers, stay for the bats!

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

An artistic garden environment of tile mosaic sculptures.

One of the world's steepest streets seems to have houses sliding down it.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.