I've been looking all over the place for a Maryland location to investigate.Unfortunately for now few accept visitors after dusk.Day lighting screws up camera shots and is trickey noticing unordinary things as anything more than dust or sunshine.
Those that do admit visitors at night are so over populated that the only thing accomplished is a good laugh of 'gotcha'.I couldnt try the search here.Theres nowhere to click enter.Other than city archives I'm at a loss.Can you help??

I don't know where your from or if you have checked this place out already but, there is St. Andrew's Church Rd. Bridge in St. Mary's County. It is supposed to be haunted by 2 ghosts. Go to prairieghosts.com, scroll down to America's Haunted Highways, click Haunted MD and you will find St. Andrew's Church Rd. Bridge. If you find anything or if you have already checked this place out, let me know. Thanks

Try Hampton Mansion-Towson,MD
its a local mansion built in the late 1700's, open to the public,operated by Nat.Park Service. You can tour inside the house,and the surrounding outside grounds(including the family cemetary).Even during the day its pretty creepy.
Also,try the Jerico covered bridge located on Jerusalem Rd. in Harford County. I don't know the exact directions but its really old and you can go there at night.