A train tunnel that was made obsolete by the dam it helped create.

Curios, scientific antiques, oddities for sale.

A small oasis not far from downtown Moab.

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

This golf ball–shaped former desert real estate office now houses a UFO museum.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

A replica of the flagpole that gave a frontier town its name.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

One of the largest trees of its kind in California.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The sign at the garden gate reads: "These Plants Can Kill."

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

This giant wooden treehouse within a sprawling garden has its own eatery.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The fountain marks the area where hundreds of accused witches were burned at the stake.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

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

360° views of the city plus five floors of optical illusions and hands-on science.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.