The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Visitors can swim with vicious predators in Crocosaurus Cove's plastic daredevil enclosure.

One of the best beaches in the entire world.

The largest collection of medicinal plants in Australia is also home to a witch who will show you how to use them.

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

Occult books, tarot, oddities.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The resting place for anonymous victims of the Danube's dark waters.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Macabre museum devoted to historical Viennese murders.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Where beer lovers can literally immerse themselves in beer.

The final resting place for the remains of 143 Habsburg royalty.

A Barbados crypt where it's said that the coffins refuse to stay put.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

Not actually a shop, but one fan's passionate show of support for a rival county's Gaelic football team.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

This 14th century tower house was once the home of Irish poet W.B. Yeats.