Explore the world's largest collection of locks, keys, handcuffs, and ornate hardware, and crack the code on an antique-filled escape room.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Thousands of American timepieces on display in the former clock-making capital of the country.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Most-visited and most-photographed slot canyon in the American Southwest.

One person’s lost luggage is another person’s treasure.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A collection of the best toys ever made inside a museum devoted to play.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

An unassuming Swiss institution houses Europe's largest toy museum.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This tribute to the founding father of the American dictionary originally contained a spelling error.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Exact replica of the ancient monument, but much, much lighter.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An unusual building on a "desolate hill" features the works of an Icelandic sculptor.

This boat represents the promise of undiscovered territory, a dream of hope, and progress and freedom for Iceland.

This stunning concert hall has become a symbol of Iceland's national recovery.

An encyclopedic collection of mammal penises.

The first woman to become a member of the parliament of Iceland.