This private residence was the template for one of the most beloved television homes of all time.

Eighty million natural history specimens call this gargantuan museum home.

The largest earthwork effigy in the world.

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

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

A reproduction of earth's many biomes.

See massive fossils that are over 200 million years old in northeastern Arizona.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

When ecosystems collide in the arid Southwest.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

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

Roadside collection of 65,000 signs.

Four-story concrete hotel never opened to customers.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Northern Ireland's Brobdingnagian stepping stones.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Famously misunderstood wonder of the ancient world

Largest lake in Great Britain measured by surface area.