Stanford Hall (Clear Spring)

Schifferstadt Museum (Frederick)

The USS Constellation (Baltimore)

Middleton Tavern (Annapolis)

Lilburn Gothic Mansion (Ellicott City)

The Tavern At Clinton (near Washington DC)

Frederick and Baltimore are the most haunted cities in Maryland.

Other Maryland Hauntings include the old Leiter House,
Lilburn Mansion, and the Cantonsville Haunted House.