This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

An exotic wildlife habitat right off The Strip.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

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

The very center of Paris is surrounded by a bevy of strange good luck rituals.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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