Valencia's Ciudad de las Artes y las Ciencias is an impressive architectural complex along the old Turia riverbed. Designed by Calatrava and Candela, it includes the Hemisfèric, the Umbracle, the Museo de las Ciencias Príncipe Felipe, the Oceanogràfic, the Palau de les Arts Reina Sofía and the Agora. The centers offer lectures, exhibitions, screenings, guided tours and workshops related to science, technology, nature and art.