I live in the US, I recently bought a house, for some reason the previous owner hung giant mirrors over the fire place and up the stairs, they have been stuck or clued on, does anyone have any ideas how I can remove them or the best way to cover them without breaking them, the one over the fire place is about 8ft high and 6ft wide, the stair mirrors are all about 12ft high by 3ft wide. Any help would be appreciated. Thanks