Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A rare view of a preserved Victorian science museum.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A layered tribute to the work of mosaicist Isaiah Zagar.

This otherworldly church spire reaches up toward the heavens.

Rusted and decayed, this former mining site is a portal to the past.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

A remarkably opulent mansion with a tragic history.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

European castle ruins in an American state park are actually the product of death and grief.

One of few surviving standpipe water towers in the U.S.

During the 19th-century, this park was a vital trading fort.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

This small stone building, the final work of a renowned artist, offers a peaceful environment with radiant, colorful glass windows .

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Fantastic collection celebrating the final send-off.

A mountaintop space observatory that is certified dark.