This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Spectacular views await visitors to this lake.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

Built to defend Washington D.C. during the Civil War, this fort became a post-war nucleus for a thriving Black community.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The largest source of fossilized insects anywhere.

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.

Shop of curiosities with a dinosaur museum tucked in its basement.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

When it opened during the final years of the embargo, all the drinks and cigars were free.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

Ancient pueblos built into the base of a natural canyon wall.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

The eroded core of an ancient volcano is now accessible by a short hike.

Eons ago, a rushing lava river formed this pristine passage through solid rock.