Hundreds of caves once used to store grains and animal feed.

Christ's blood allegedly preserved in a Belgian town.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

A once-magnificent collegiate church is falling into ruin.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

A moody and picturesque riverside ruin overgrown with vegetation.