Race through the maze, get your name on the sign.

This ancient Hawaiian henge may have been an early star chart.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The bones of two medieval royal lions were discovered at the historic fortress.

Eighty million natural history specimens call this gargantuan museum home.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The remains of Uruguayan hero José Artigas lie beneath a monument in Montevideo’s main square.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

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

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

It's good luck to be mocked by this monkey.

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

The design of this beautifully crafted building was inspired by Norwegian glaciers.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

This fairytale-like structure is the last turf church ever constructed in Iceland.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.