Two small chapels housed inside an ancient tree.

This is what trains will look like after the zombie apocalypse.

Monsters and miniatures are held in equal esteem at this wondrous museum.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

The famous winding walk at Chartres is surrounded in mystery and myth.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

The largest underground church in Europe.

Science fiction's grandfather has a fittingly marvelous tomb.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.