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

A watering hole where the options for seating include a bar, patio, or subterranean cave.

Watch the newest land on the planet form before your eyes.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

World's largest collection of serial killer artwork and other macabre exhibits.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

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

Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

An astounding annual light display honors the victims of one of Japan's most devastating earthquakes.

A beautiful bamboo trail tucked in this famous Japanese Shrine.

Japanese national treasure originally built in 593 CE.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.