This is Cliff house in Leeds, it has an incredible spiral staircase, domed ceiling and some fantastic mosaics (hidden under really secure boards)
There is a website about its past and future here
http://www.cliffhouseleeds.co.uk/index.swf
""" Formerly known as Western Flatts House, Cliff House is a grade II listed villa which was originally built in 1848 by Joseph Cliff, an extremely wealthy Leeds businessman. """