The oldest operating roller coaster of its kind, the Montaña Suiza has been thrilling riders since 1928.

Giant topiary dog once played a role in a terrorist bomb plot.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Fighting the British and making game shows for over 150 years.

The world's largest reflecting pool is just two centimeters deep.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Winston Churchill painted this lake during his stay Woolsack Castle in the Landes forest.

The eclectic observatory castle of a 19th-century astronomer and explorer.

Beneath the city of Lourdes, France is a massive, concrete church.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

A fortified palace in the shape of a ship on the Thiou river.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.