A beautiful but toxic fountain of mercury.

A once-secret library of Freemason history in Catalonia.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Part ski resort, part modern art space, this lodge brings giant metal spiders and bloody doors to the Austrian Alps.

This Italian foot path winds through the mountains via 52 individual tunnels.

The middle finger of modernity.

The oldest operating pharmacy in the world features 800-year-old recipes.

The highest peak in the state of Vermont has some interesting features.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.