This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

Quite simply the largest tree in the world (by volume).

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A self-built castle made by a mysterious man.

A beautiful geyser under environmental threat.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

Once a dumping spot, now a park with a kayak launch.

The Underground Railroad passed right through this historic Brooklyn Heights church.

Obscure and obsolete publications are given new life as works of art.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This expansive bridge in the Canadian wilderness was originally just built for friends.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

What's that on the side of that building? Va Va Voom, it's Bettie!

A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

This unique library spans a mighty river.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.