This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

Medicinal spa created with the discharge from a geothermal energy plant.

An encyclopedic collection of mammal penises.

This beautiful, historic church looks like something out of a simpler past.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The largest preserved walking dragline excavator in Western Europe.

North America's largest accredited model railroad museum.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A mysterious castle built as a monument to lost love.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

A historic presidential getaway on the continental United States' southernmost island.

A historic landmark and museum filled with curious objects representing the history of Key West.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

These large-scale reproductions of Mario Sanchez’s colorful pictures and murals feel like a walk around a small movie set, and also lead you down an imaginary “street” of past decades.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

The highway's southernmost spot is a beloved local attraction.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

A monument celebrating the idea of reaching inaccessible places.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.