Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The Boston square dedicated to the dark poet who was born nearby.

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

Narrowest house in Boston.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

This historic patch of real estate offers a glimpse of colonial Boston.

Tragedy on Little Brewster Island memorialized.

Experience what life was like in Ireland during the Viking and medieval ages.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Despite its extensive history, this fort saw little to no combat.

The world's largest piece of copyrighted artwork.

A tongue-in-cheek arcade where the games are based on everyday life.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Preserved behind glass, the ruins of a medieval building used to store human remains.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.