In the 1970s, spooky stories began circulating about a North Side house that had been located near where Three Rivers Stadium was completed in 1968. According to the stories, the house had been a grand mansion where decades of depraved murders and medical experimentation had taken place. It became dubbed “America’s most haunted house.”
No (known) murders and medical experiments ever happened inside the house at 1129 Ridge Ave. There was one grisly death caused by a massive gas explosion in 1927 that leveled a large chunk of the Chateau neighborhood, and the house was owned by an early Mafia figure. In fact, the real story behind what became known as the Congelier mansion is almost as wild as the haunted house stories — its longtime occupants were gangsters, not ghosts.
Severed heads and grisly experiments…