135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

Vibrant street art created with mixed media.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

This house's itty bitty size means no humans allowed.

The odd cement nubs littering this Spanish square are actually the entrances to a series of buried silos.

Idol made by King Jeroboam for the Israelites.

A Biblically notable site over the ruins of an ancient city that is now a protected World Heritage site.

The home of the Dead Sea Scrolls is an abstract modernist dream.

A "miracle" that seems to produce more holy fistfights than holy revelations.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

The remains of this ancient fortress atop a manmade hill look as though they were built into a volcano.

One of Chile's most active volcanoes is riddled with beautiful caves.

Very likely the only museum in the world that celebrates the glory of the humble banjo.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.