One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

This ancient Spanish castle sits high upon a hilltop.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This huge metal monument is slowly being stripped to its concrete skeleton.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

Abandoned Nazi train station turned underground astroparticle laboratory.

Sanctuary on a ridge near an ancient shrine to a "Black Madonna" built by the founder of Opus Dei.

A breathtaking canyon offers stunning views and frightful pathways through an ecological paradise.

Of course Salvador Dalí lived in a castle...

The Gaudí-inspired building that was the start of Terrassenc modernism.

Living towers made of people that are now recognized by UNESCO.

Things aren't quite what they seem at this mind-bending museum.

An abandoned masterpiece of Soviet Brutalist architecture.

The largest coin pyramid in the world is a carefully balanced stack of over 1,000,000 pieces.

Rub it for a bit of good luck.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.