The largest and best-preserved rotunda in Prague.

Explore the five senses depicted on this protruding Gothic window.

What looks like missing grout is actually an old pub's peephole.

This mummified mermaid corpse is an aquatic curio that was eventually revealed to be a fake.

The phone booths in this English town have distinctly milky hues.

Marking the ancient boundaries of asylum around Beverley Minster.

Dedicated to one of the author's most iconic works.

The writer of 'Cyrano De Bergerac' found inspiration in this Pyrennes spa town.

Lewis Carroll's White Rabbit or something else altogether?

Visit a prison tower used during witch tribunals.

A little known Colombian theme park of giant curiosities.

Enchanting cave with a river crashing through the roof.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

This picturesque mansion has gone from opulent ruin to nature museum.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A dangling church built over a Colombian gorge.

An explosion of natural color known as "the river that ran away from paradise."

A puppy slum that protects canines from the cruelties of the human slums.

Known as the "Finger of God," a dramatic rock formation resembles a divine hand extending towards the heavens.

This striking, two-toned confluence of rivers is visible from space.

Moss-covered sculptures fill this small Brazilian gorge.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

This Brazilian palace island was once the site of the last grand ball before revolution.