A medieval gate once used as a prison and how home to a city museum.

This mine is home to the largest man-made hole in Europe.

Found in the waddenzee, this propeller has been put on public display as a reminder of the Second World War.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This pioneer village is like a time capsule of 19th-century Australia.

A unique memorial to the bunnies who died because of Australia's historic Rabbit Proof Fence.

Many rock climbers have come to conquer this slender sea stack, with various degrees of success.

Dozens of large-scale, creative, evocative curios from prominent artists dot the calm outdoor space around this major museum.

From a distance, this statue of an eagle looks like a giant chicken on a stick.

This Western Australian mint was established during the height of the Australian gold rush.

The city’s oldest gateway to the galaxy lies at the entrance to the Royal Botanical Gardens.

The statue honors an adventurous seafaring cat.

The world's only full-size replica of the research hut used by Douglas Mawson for his 1911-14 Australasian Antarctic Expedition.

The world's first cageless zoo is working to save endangered Tasmanian devils.

It's beautiful, it's haunted and its claim to fame is that it's the oldest existing stone arch bridge in Australia.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

The tallest tower in Cáceres's Old Town.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.