The City of Arts and Sciences is situated at the end of the former riverbed of the river Turia, which was drained and rerouted after a catastrophic flood in 1957. The old riverbed was turned into a picturesque sunken park.Designed by Santiago Calatrava and Félix Candela, the project underwent the first stages of construction in July 1996 and the finished "city" was inaugurated April 16, 1998 with the opening of L'Hemisfèric. The last great component of the City of Arts and Sciences, El Palau de les Arts Reina Sofia, was presented on October 9, 2005, Valencian Community Day.