A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

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

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

The glacier tucked within a New Zealand rainforest.

This strange geological landscape erupts with sudden bursts of water.

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.

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

The Victoria-era quarantine station for Sydney.

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

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

A giant Australian fruit and tropical farm.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

Come for the flowers, stay for the bats!

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

This historic observatory contains the world's oldest refracting lens telescope.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

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

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

A white Buddhist temple with a golden restroom.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

A forest of phallic offerings found in a quiet corner of a hotel car park.