The oldest arched-covered bridge in Virginia has truly withstood the test of time.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

The oddly shaped, steam-spewing building is now an art studio and gallery.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

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

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A quintet of history museums make this Virginia graveyard as much a resting place for funereal history as it is for people.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

One man's extraordinary topiary garden in a small South Carolina town.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

The world's largest fire hydrant is supposedly tornado-proof.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

An old train trestle re-imagined as an Egyptian obelisk.

A mysterious castle built as a monument to lost love.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

The bizarre story of the mysterious death and hidden treasure of one of Sanibel Island's early homesteaders.

The island residents are known for taking their quirky sense of humor with them to the grave.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

A monument celebrating the idea of reaching inaccessible places.

The highway's southernmost spot is a beloved local attraction.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Four metal statues of massive animal penises stand outside the university's Animal Sciences building.