Humble beginnings for one of the world's most famous scientists.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

An ethereal glowing blue ocean cave in Croatia.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Loyal fans of one television's most famous painters still come to pay their respects.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

From scholastic to sepulchral - now under reconstruction.

This recipe is set in stone.

This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

Controversial site of what could be Europe's first pyramid.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

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