Heidelberg Tun

The Heidelberg Tun (known in German as the Grosses Fass) is an extremely large wine vat contained within the cellars of Heidelberg castle. It has a capacity of approximately 220,017 litres (58,124 gallons). It was made in 1751 of oak from reputedly 130 trees. It has only rarely been used. A dance floor was constructed on top of the tun. It is now a popular tourist attraction in Heidelberg.

The Tun is referenced in Jules Verne's novel Five Weeks in a Balloon, Washington Irving in The Specter Bridegroom, Mary Hazelton Wade's Bertha and by Mark Twain in A Tramp Abroad.