Iron Island Museum in Buffalo, NY was built in 1895. It's hard to tell from photographs, but the building is constructed of brick. The year in which it was built and the location leads me to believe the basement/foundation at least is stone construction. I'm willing to give it a point for that. Originally a church, it was later used as a funeral home in the 1950s.
The episode of "Ghost Hunters" that explored this location really struck me as being one of the most ideal locations they've ever explored (along with St. Augustine and the Stanley Hotel). If you saw the episode, you probably heard the footsteps stomping upstairs in the attic where the original church's peak and windows were located. You might have heard the voices, as well as the amazing EVP including the angry old man sounding voice in the attic and the front door opening and closing itself. When I sat down for that episode what struck mew as the name of the place "Iron Island" and the reason for it. Railroad tracks. The site is located in between loads of railroad tracks zig-zagging around it. I remember thinking before TAPS started their investigation that this site was going to be active.
And it was!
I gave Iron Island this scoring (6 of 6)
1. Stone construction.
2. Older than 50 years.
3. History of death/trauma.
4. Sedimentary rock.
5. Train tracks.
6. Not far from water (less than a mile from a small lake). However, I have no way of knowing what underground springs might be in the area and in this part of the country, they should be numerous.
If you're noticing that some of the best evidentiary episodes of "Ghost Hunters" coincides with the highest scores, you're not alone. It hasn't escaped my notice either and I'm hoping eventually when I'm done gathering more information, to be able to postulate some ideas of just why these sites are more haunted. There might be times, like in the railway conditions of this site, that it has more weight on the haunted scale than just usual train tracks.