One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

A historic observatory precariously perched at the "Top of Europe."

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The world's first purpose-built indoor shopping mall opened in Sweden in 1955.

Swedish skyscraper with a 90° twist.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

This chimerical bridge/tunnel appears to dead end right into the sea.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

King Carlos IV laid the first stone during construction of this chapel.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

A large collection of solar and night-time telescopes dot a small area on the Teide mountain range.

This historic electric train has operated with regularity since the early 1900s.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

The surviving remnants of a destroyed medieval church now stand in a public park.

This enormous censer uses a pulley system installed over 400 years ago.