I have one that might trump them all.
Because to visit it you'd need to travel back in time.
The People's Temple (originally a Jewish temple) -- the home of the Jim Jones massacre in Guyana cult at 1839 Geary Street San Francisco -- had a history before Jim Jones and also after it.
Jonestown - Massacre, Guyana & Cult - HISTORY
For a brief period of time there existed one of the most amazing art/architecture installations I've ever seen anywhere in the world.
Canticle of the Sun of Saint Francis of Assisi
Jerry's Brokendown Palaces: Theatre 1839 (Temple Beautiful), 1839 Geary Blvd., San Francisco, CA (jerrygarciasbrokendownpalaces.blogspot.com)
While open to the public for that brief period of time it wasn't exactly brimming with crowds so I feel very privileged to be one of rather small number of people to have experienced this.
It would have been a permanent attraction, but the historic building burned to the ground and the site now houses a Post Office.