Smack in the midst of coal country, this collection provides a peoples' history of Appalachian miners' heritage.

One of the last remaining covered bridges in the region.

Apparently, the whole cosmos emanates from this plain concrete tower.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

A 13th-century stronghold that has fallen into ruin.

At the edge of the high desert, California's second-largest natural lake is home to a unique subspecies of trout adapted to its alkaline waters.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Legend has it the mill owner's daughter, Mary Musgrove, helped a Patriot soldier hide behind these falls.

The record holder for the world’s largest peach.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

This unassuming passageway played a key role in one of the most important events in U.S. history.

Home to a vast and influential collection of Shakespeareana.

A piece of the Ludendorff Bridge, also known as Remagan Bridge, calls this military base home.

This poor little statue is the most vandalized memorial in Washington.

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

This building, previously used as a courthouse, has an unusual geological feature in its basement.

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

Described as one of the Baltic region’s most daring and original construction projects.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

A short walk through the woods will take you to an unusual flat hill top, used by the Shakers for outdoor worship.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.