Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Amsterdam's former hotspot for public executions and dissections.

World War II ended before these tunnels built to protect vital oil from Japanese bombs were ever used.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

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

Free candle-lit art gallery, accompanied by a live piano score.

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.

New Zealand's epic shrine to all things puzzling.

The glacier tucked within a New Zealand rainforest.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The platform atop this verdant volcano was built with the help of a royal elephant.

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

High winds can make this one scary landing.

New Zealand's only running funicular railway.

A giant Australian fruit and tropical farm.

Come for the flowers, stay for the bats!

One of the oldest theaters in Australia, it's also said to be haunted by a performer who died on stage.

Clusters of huge boulders in the Australian Outback.

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

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

The world's largest collection of garden gnomes lives among the trees and wildflowers on this woodland reserve.

Stroll through Welsh history in a village of reconstructed structures.