Roman ruins top white travertine terraces formed by ancient hot springs.

A marvel of Byzantine engineering under the streets of Istanbul.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The last water-powered mill in Oregon is open daily for free tours and has a surprising history.

This dilapidated ship carcass covered in trees is a striking sight.

Former farm staffed by mental patients is now a public park.

This statue and its surrounding plaques tells the story of Ko-kwal-alwoot and the kinship between the Samish people and the sea.

Sleep beneath the big screen at this old-school movie theater.

Rustic natural hot springs in the deciduous rain forest.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

A grandiose title could not save this mercantile community from obscurity.

The tragic reality of a village riddled with rumors of haunts, chemical spills, and serial killers.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

This unique piece of land is home to a patented artificial lake and the remains of an old Girl Scout camp.

Faces carved into the cliffs create an otherworldly walking trail.

This public space is speckled with the eerie remnants of a defunct amusement park.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

Rare recess caves fill this unbelievably beautiful Ohio park.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

An abandoned incline railway site is now a green space with six acres of trails connecting hilltop neighborhoods.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.