A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

Elaborate tile work in this railway station tells the story of Portugal.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Commonly acknowledged as the only public monument to the Devil himself.

An ancient Egyptian temple in the middle of Madrid, Spain.

Climb inside an iron crystal magnified 165 billion times its normal size.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Museum dedicated to the terror regimes of Hungary.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

A beautifully eclectic mix of architectural styles.

This modest marker near Notre Dame identifies the very center of Paris.