This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Fortified medieval tower house with lovely roof garden.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Pilgrimage site for star-crossed lovers.

This winding road through an Italian canyon may be the most scenic drive in the world.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This massive blockhead sculpture hides an entire library.

A memorial to honor those who were killed in a Bastille Day terror attack in Nice.

This saucy statue once caused outrage among locals.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Sip cherry liqueur at a bar dating back to 1840.

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

A colossal statue of a woman hugging a modern building.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Looming communist pillar with a Czech twist.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.