The formidable fowl can be found standing near an isolated hiking path.

Home to the deepest rift anywhere on Earth.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

Native Americans built this circle of stones, which was used to predict astronomical events.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

An architect's childhood fantasy treehouse made real.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

Some believe Ponce de León's mystical spring lurks right under a public drinking fountain.

More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

The mysterious round rocks of Schooner Gulch.

A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

This chestnut box will not be opened until the country music legend's 100th birthday in 2046.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

An open-air, roadside eatery celebrating a historic indigenous cuisine of complicated significance.

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

A mysterious castle built as a monument to lost love.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

On Hilton Head Island this bronze King of the Sea rules all things briny—and lets you know if you’re late for lunch.

This ceremonial mound is one of the first officially recognized Native American historical sites in North Carolina.