One of Australia's largest secondhand bookstores.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Catacombs turned marketplace.

Highly spherical boulders on the shores of New Zealand.

A perfect turquoise lake colored with glacier dust.

New Zealand's epic shrine to all things puzzling.

The glacier tucked within a New Zealand rainforest.

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

One of the first big sculptures anywhere in Australia.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

The only pollutant in the clear blue water is sunscreen.

Climb to the top of the world's largest seated bronze Buddha.

The world's most active stratovolcano is almost always erupting.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Looming communist pillar with a Czech twist.

Mummified monks and the accidentally interred, in a 17th-century crypt.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

A church of bones, decorated with 40,000 human skeletons.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Microscopic scenes; some call it novelty, some call it art.

Two stunning 17th-century libraries and a cabinet of curiosities.

A crucified and bearded female saint.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.