42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

The highest point in Washington state is a volcano covered in glaciers.

This former coal gasification plant found a curious second life as a popular public park.

A museum dedicated to the history and exploration of both popular music and science fiction.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

Portlandia is the second-largest copper repoussé statue in the United States.

The magic's in the hole!

The world's largest piece of copyrighted artwork.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This landmark cemetery in Boston was created more than 300 years ago.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

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

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

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

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

An enormous, inside-out glass globe built in 1935.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

A man-made island in scenic San Francisco Bay.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.