Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

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

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

What's that on the side of that building? Va Va Voom, it's Bettie!

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This macabre shop, filled with art, oddities, and taxidermy is hidden in the heart of the French Quarter.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Unrepaired walls from a 1920 anarchist bomb attack.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A historic Montreal market that was the city's agricultural hub for over century.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.