The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Three prestigious academic collections come together to create a world-class natural history museum.

A historic bridge with a lovely acoustic anomaly.

Over 50 whirling pools left behind from the glacial age.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

A collection of full-size movie monsters opened to the public.

Friction between grains of sand cause a curious "singing" sound.

A beautiful Victorian-era cemetery, complete with a miniature village.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.

The easiest way to the highest point in Wyoming is only accessible via one hefty fee.

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

A miraculous natural phenomenon known as "the spring that breathes."

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

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

This abandoned motel doesn't welcome guests anymore, but decay and a creepy atmosphere still call it home.

A museum dedicated to the history and art of staying clean.

Mining town from the late 1890s, once home to Calamity Jane.