Copenhagen's celebrated theme park and gardens.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

Budapest's Communist-era statues, banished to the suburbs.

Museum dedicated to the terror regimes of Hungary.

An ancient knight and a symbol of the city's freedom.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

The Sun King's military models, saved from the Louvre.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

Single runway interrupted by a busy road that cuts across its middle.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

"The only replacement for a DC-3 is another DC-3."

A Looff creation in Santa Monica best described as “a California-Byzantine-Moorish-style fantasy.”

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

This municipal playground was co-created by the father of one of the most playful characters ever.

A second generation sun-powered marvel lights up the night.

This Pringle-shaped ledge makes for the perfect photo op.