The remnants of a creative early method of wildfire prevention.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

Bronze statue marks the spinach capital of the world.

The world's only museum devoted solely to the art and collection of action figures.

Spend the night in this formerly abandoned traditional Scottish village.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A lifetime's accumulation of bric-a-brac and kitsch.

Curios, scientific antiques, oddities for sale.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A mysterious "wedding cake" castle in the middle of the urban desert.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

A Tucson museum and performance space full of found-object movable sculptures.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A famous flea market artist's studio that's full of odds and ends.

A home base for Judy Chicago, one of America's leading radical feminist artists.

A somber monument commemorates the site of a Native American reservation marked by suffering.

A warm desert spring holds one of the rarest species on earth.