Twenty-million big ones for a mansion by the sea? Meh, why not? Taylor Swift was recently spotted taking what appeared to be a realtor-led tour of the historic Harkness House in Watch Hill, R.I. The 23-year-old singer checked out the balconies and various rooms of the 11,000 square foot white mansion with her father, Scott, her mom, Andrea and her brother, Austin, leading TMZ to speculate that she may add the multi-million dollar home to her growing list of properties. So far, Tay-Tay's spent some of her estimated $57 million in assets on a place in Beverly Hills, Calif., a penthouse duplex in Nashville, Tenn., and some digs in Hyannis Port, Mass., which she put up for sale after calling it quits with RFK's grandson, Conor Kennedy.