A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A yoga studio and venue for "chill-out parties" in a former chicken slaughterhouse.

This cavernous swimming spot doubles as a home to the largest known colony of bats in Central Asia.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

On Keriri/Hammond Island, a marker shares the story of an imprisoned woman and the island she saved and that eventually saved her—in the fictional world of Kcymaerxthaere.

In the Flinders Ranges of South Australia, this marker marks the severe haven of War Kangaroos that once roamed here in the fictional parallel world of Kcymaerxthaere.

A museum in Hokkaido is housed in a former high school. On its grounds a marker shares the awakening of a man who longs to be reunited with his soulmate in the fictional world of Kcymaerxthaere.

In the middle of a desert subdivision, there is supposedly an impact crater site from Kcymaerxthaereal times.

At a site that has witnessed many significant events, according to the fictional Kcymaerxthaere, it is best known as the place of lunar discovery.

In the fictional world of Kcymaerxthaere, standing at this site just outside Vienna, Austria, the sky would have been found beneath your feet.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

Many generations ago, it was said that one could find celestial splendor in a lush meadow not far from this very marker according to the lore of the fictional world Kcymaerxthaere.

Outside Grand Valley State University, you'll find a bench upon which many were said to have sat according to the fictional Kcymaerxthaere, waiting for a guide of time.

At Fountain and Division, in the shadow of Kendall College of Art and Design, lays the story of a fictional culture whose political system was used under license and who finally rebelled.

Along the Rhine, about a mile from the historic Munster, learn the heartrending story of two lovers torn asunder, cast into unknown layers of time and space.

This plaque marks the site where the penultimate chapter in the journey of two doomed boys unfolded in an imagined parallel universe.

In pastoral England, a plaque marks where an imaginary community addressed the problem of combat mortality.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

In an alley not far from where two great highways meet, byways of a very different sort are honored.

Outside Hope College in Holland, Michigan, a marker honors a University without people from the fictional Kcymaerxthaereal times.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

Forgotten German bunkers in China create a sharp cultural contrast.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.