The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Groups of prehistoric tombs that dot the mountains of northern Oman.

A striking 12th-century-style castle built on the edge of a cliff.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Is there such thing as too many fruit bats? Not anymore.

The former home of Norway's greatest romantic composer.

Tens of thousands of tiny bottles stuffed with various items.

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

A massive metal lobster welcomes tourists to a roadside restaurant.

One of the first big sculptures anywhere in Australia.

Largest maize maze in the Southern hemisphere built with GPS technology on more than two acres.

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

Come for the flowers, stay for the bats!

This massive water spout has been luring visitors for hundreds of years, some to their death.

At five meters long, that is one big piece of foam poop.

Concrete spud looks like the North American Sebago.

Honoring the annual National Cherry Festival.

Three-story concrete ram with a permanent gift shop.

Children's playground hidden under a big pink and blue cap.

The gigantic preserved heart of a champion racehorse.