19th century pendulum and a clock restored by a rogue group of guerilla artists.

Abandoned railway line circling the city of Paris.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

France's most famous cemetery, with some of its most curious tombs.

The library's graceful rotunda is like a bibliophile's temple.

It houses the remains of a 17th-century version of the Titanic.

These coffin-like Brutalist balconies were inspired by a nearby mine.

The world's largest underground iron ore mine.

The official meeting point for the oddly named governing assembly of ancient Sweden.

The Swedish flag over this small naval fort signals that the nation is at peace.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

Sweden's "good old days" painstakingly re-created in a model village.

The world's first ice hotel is still one of the most elaborate and beautiful.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.