Possibly the oldest of Britain's ancient henges is also one of its most stark.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

In the fictional world of Kcymaerxthaere, standing at this site just outside Vienna, Austria, the sky would have been found beneath your feet.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

Macabre astrological automaton clock dating to the late 1400s.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

This 19th century cyclorama acts like an analogue time machine to a different era.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

The world's largest collection of intentionally useless inventions.

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

Where beer lovers can literally immerse themselves in beer.

A spherical "micro-nation" in the heart of Vienna.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The Habsburgs' royal collections of art and wonders.