Louisville, Kentucky -- Workers preparing historic Whiskey Row buildings for interior demolition have discovered what appears to be the remnants of a sado-masochistic swingers club, abandoned for decades.

"This is the weirdest I've ever found," said Greg Harris, the superintendent of the project for Sullivan-Cozart.

Two floors below Main Street, a large black and white logo displays the word "LATEX," presumably the name of the club, painted on the century old wall.

From deep inside the subterranean blackness, a series of oil paintings depict a series of bizarre images, sexual and violent.

"Very disturbing," Harris said.

Below one painting, a piece of equipment that appears fit for a torture chamber remains. A wooden rack large enough for one or two people includes a headrest and a rusted chain that can be turned by a handle. A gear resembling a saw blade is connected to the handle.

Workers found sheets of plastic that they presume separated the sub-basement into different rooms, candles, a disintegrated couch, a mysterious piece of cloth draped over a table and chair and another chair - covered in cobwebs and in a slow decay.

The project will save the facades of all seven Whiskey Row buildings in the project. The interiors of three middle buildings will be saved, but demolition begins September 4 on the interiors of the other four buildings.

Crews have not yet had access to several parts of the buildings, "so we probably may see some more things," said Brad Wilcox, a representative for the ownership group.

Click here to view the photos. WARNING: Some of the pictures may not be suitable for all ages.