The spherical grains of white quartz sand give every step on this Australian beach a distinctive sound.

A waterfall rushing through a lush fern gully in Australia's Tarra-Bulga National Park.

Designed to provide fantastic views of the surrounding rainforest.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A whimsical bridge adorned with decorative dragons.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

This abandoned Slovenian military barracks has become a punky-political art squat.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Thousands of lawn gnomes have infested this Australian roundabout.

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

Hundreds of bras, blowing in the wind.

Stockholm's deepest subway station is also a stunning ecological wonder.

Crooked windswept pines give this old forest an enchanted and magical look.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

Tubing through a cave lit with glowworms is a magical underground experience.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.