With its floral Venetian Gothic style and Renaissance features, Palazzo Dario in Venice, is one of the most beautiful and original palaces along the Grand Canal. It is Located in the sestiere Dorsoduro on the Campiello Barbaro.
Winchester Mystery House in San Jose, California, built by Sarah Winchester to escape the "spirits" created by the deaths of the Winchester Rifle. Truly a unique place. And if you're a gun nut like me don't miss the Winchester museum behind it.