50 of the world's most unusual buildings
Architecture is a defining feature of any civilisation, but buildings can also become representations of individual eccentricity or extravagance.
From grand post modern buildings created with eye popping budgets, to passion projects crafted largely by their own inhabitants, here are 50 of the world's most unusual pieces of architecture.
Some, like the inverted red brick houses, fairy tale shoes and psychedelic snail are intensely kitschy, while others like Milunic and Gehry's Dancing House are simply breathtaking.
And absolutely all of them would shock were they to pop up around the corner from your place.
(Image sources credited in gallery)