Built in 63 days

Quite an incredible story: Back in 1777 Marie-Antoinette (Queen of France) wagered against the Comte d'Artois (Louis XVI's brother) that the new château could not be completed within three months. It's estimated that 800 workers achieved the task - not talking about the cost.

The small neoclassical château was intended for brief stays while hunting and can be seen in the Bois de Boulogne, Paris.