The Ugly House, Betws-y-Coed, Wales. Legend has it that it was built as a "Ty Un Nos" or a house built overnight in the 15th century by two outlaw brothers. The motive appears to be that ancient law stated that if a house could be built from sunrise to sunset with walls, a roof and chimney those who built it could claim the freehold. It is apparently built with no mortar!
Hard to believe this is called The Ugly House, but it is! Situated in the heart of Snowdonia, Wales, it's currently a very charming little tea room. Some history (from the Snowdonia Society website): Legend tells us that it was a crude house built in the 15th century by two outlaw brothers. It was a ‘Ty Un Nos’ - or house built overnight. Under ancient law, he who built a house between sunset and sunrise, with walls, roof and smoking chimney, could claim the freehold.