Located just a hop, skip and a jump away from the Estonian National Museum and its dramatic structure, the Upside Down House will challenge your perception of reality – if it doesn't, we'll be happy to refer you to a very good psychiatrist. For those that aren't quite sure, the whole house has actually been built upside down and all the furnishings have been attached to the walls or ceilings, or floors, or... we'll let you be the judge. While the thought of living in such an unconventional space may seem daunting, a visit here is undeniably worthwhile. The meticulous attention to detail makes it the perfect backdrop for some quirky selfies, although you might find yourself needing a friend's helping hand for those gravity-defying poses. So, why not step into this topsy-turvy world and flip your perspective upside down?