A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Wedged between two sets of row houses is an awkwardly located family graveyard.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

An astounding collection of medical specimens, including bits of President Lincoln.

A museum dedicated to exhibiting remarkable outsider art.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The above-ground crypts at this Catholic cemetery face north-south instead of the usual east-west.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

A hidden grotto on the grounds of the Kane County Government Center.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

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

At Macon’s oldest cemetery two members of Allman Brothers are buried side by side.

An elegant Georgian cemetery best known for the grave of the little girl whose murder on Christmas Day remains unsolved.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

This small cemetery is all that remains of Atlanta's first Black communities.

Developers built a Walmart around one family's plot and constructed a mausoleum in the parking lot.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

This kitsch eatery is chock-a-block with bric-a-brac.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.