A monument celebrating the idea of reaching inaccessible places.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

France's most famous cemetery, with some of its most curious tombs.

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

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Elevated freight railway turned wildly successful urban park.

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