Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A remarkably intact castle that once was the largest in Ireland.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

The king of U.S. high points towers over every other peak on the continent.

"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 famous author's birthplace is preserved in a town that he once described as narrow-minded.

Thousands of flamingos and other bird species flourish in these Camargue wetlands.

Largest lake in Great Britain measured by surface area.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

A smoke stack so large, the Washington Monument could fit inside!

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

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

A sleepy little town that had the greatest landslide in North American history fall on it.

The only road through the heart of Glacier National Park.