The signs of a long buried road can still be found hidden beneath a London sewer grate.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

An Antoni Gaudí masterpiece in Astorga.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

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

France's high-tech, future-themed amusement park.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

Two small chapels housed inside an ancient tree.

A crumbling monument to a now locally-extinct sport in Bulgaria's oldest ski resort.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.