How big was the Bastille...really...exactly? From results of research into George Washington's Bastille Key, Mount Vernon's "Liberty Key." Learn how the correct dimensions of the Bastille, former prison and fortress in Paris, France, have finally been determined. Look at the amazing similarity between the Bastille and the Lincoln Memorial (9:38). Also see the "Brother to the Bastille" (Chateau de Tarascon). The size (height, width/depth, length) of the Bastille published elsewhere by "experts" links to sources with dubious value. Here we find the original engineering drawings and expand the scales by photo-shopping them into tape measures which we overlay onto the drawings to yield the correct dimensions. Much more interesting information is available in the book "George Washington's Liberty Key: Mount Vernon's Bastille Key," a best-seller at the Shops at Mount Vernon.