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

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

World's first "penitentiary," meant to be humane, drove men insane.

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

Church built on the site where the last tsar of Russia and his family were killed.

Some of the world's only freshwater seals live in one very special lake in Russia.

A fantastic castle rumored to be the birthplace of King Arthur.

Museum about life, death, and cannibalism in the Stone Age.

1513 Turkish world map, full of European state secrets and snarky commentary.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

The subtle science of a master molecular gastronomist.

The world's largest vertical wind tunnel.

Eighteenth-century home, where Herschel discovered the planet Uranus.

An eccentric inventor's castle home with its own indoor weather system.

America's only nuclear missile silo open to the public.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Macabre astrological automaton clock dating to the late 1400s.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A priceless collection of the Nation's cryptologic history.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

The United States Capitol's former columns still stand.

An original apothecary from 1792.

Beautiful hillside Vermont cemetery with amazing funerary art.