One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Rome’s legendary peephole vista is also a former Crusader stronghold.

The most visited, and possibly most controversial, museum in Germany.

Macabre astrological automaton clock dating to the late 1400s.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Paris' linguistic guide to the international language of, yes, love.

Why trying to get lost in the old quarters of Essaouira may be harder than you think

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Traditional 11th-century outdoor tannery.

Mosaics, storks, and brothels—this ancient city has it all.

The other side is actually green.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.