The Barrage Vauban (Vauban weir) is a weir erected in the 17th century on the river Ill west of the "Petite France" district in Strasbourg. It was constructed from 1686 to 1700 by the French Engineer Jacques Tarade according to plans by Vauban. Several stories high, it houses sculptures in its main level and a panoramical terrace on its roof.