This salt lake in South Australia features seasonal color changes and its very own loch monster.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

This derelict superstructure was a very important warning system for the Soviet military.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This snug medieval lane is one of the narrowest streets in the world.

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

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A whimsical bridge adorned with decorative dragons.

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

This one-time health resort was used by aristocrats around the world.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

These giant grain silo portraits capture elements of rural life in Australia.

The artwork celebrates Trugo, a odd yet beloved local sport played only around Melbourne.

Monument that stands 40 feet and weighs 1,000 pounds.

A youth-centric science center hides an industrial triumph.

Melbourne's favorite bronze dog.

Australia's only intact colonial warship never saw action before being turned into a scenic wreck.

A microcosm of the whaling industry in a small Australian town.

Every hour a secret compartment drops from this giant pocket watch, revealing a lovely surprise.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

A beautiful 1920s tower filled with local hidden gems.

For better or worse, this whimsical sculpture garden was a favorite place of Rupert Murdoch's.