The floor of this spectacular Baroque sanctuary is covered in memento mori.

The solemn exterior conceals an opulent interior of this 17th century church.

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

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

In the town of Třeboň, carp is king.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

A sculpture of a blood drop designed to honor those that have donated the precious liquid.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A unique two-level bridge designed to honor a king.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

The oldest working mechanical clock in the world.

This striking statue brings a scene from the African savannah into central London.

An enormous cat made of recycled wood scraps.

On Japan's Tashirojima Island, cats are king.