This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The celebrated eyesore created by starry-eyed sweethearts.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

Lavish royal estate punctuated with heated greenhouses.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

Visitors to this Belgium graveyard are greeted by the grieving stone parents of the young men lost to war.

This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

Christ's blood preserved in a Belgian town.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Brussels' favorite peeing boy has a sister.

Huge winged monument in the United Kingdom.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Where Agatha Christie mysteriously disappeared in 1926.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

One of Europe's oldest libraries.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.