A geothermal paradise with bubbling mud pools and bright blue hot springs.

A unique tribute to the millions of animals who served and died for the British military.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

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

The site of Paul Revere's historic two lantern warning.

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

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

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

Three columns of volcanic rock shoot out of the ocean.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

Along this wire fence, travelers have been leaving a particular memento since 2012.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

Illegal drag racing two stories beneath Chicago’s streets.

A vast array of tropical plants collected by a vacationing couple.

The snowbirds here are circus sideshow performers.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Many of the murals covering this sleepy Florida town hide some sort of intentional error.