The final resting place of soldiers' loyal canine companions.

The most loyal of little dogs, or a Victorian era publicity stunt?

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

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal 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.

Few other hotels can rival the grandeur of the Castle in the Rockies.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Home to items never before seen by the public.

This grand gothic brewery has been pumping out suds for over a hundred years.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A cemetery housing wild west legends in South Dakota.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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