From bizarre houses and questionable architectural experiments to skyscrapers plagued by serious design flaws, some buildings have become famous for all the wrong reasons. This countdown explores 15 unusual structures from around the world, including a house inspired by the Flintstones, an elephant-shaped skyscraper in Bangkok, and a towering concept that would have dwarfed Mount Fuji.

But strange appearances are only part of the story. Some of these buildings faced costly repairs, dangerous structural problems, or unexpected consequences that turned ambitious architectural projects into cautionary tales. Others became infamous for their impractical designs, leaving one big question: what were the architects thinking?! Don’t forget to follow us also on Facebook!