Wikipedia
L'Àgora
L'Àgora (, ; , "The Agora") is a multifunctional covered space designed by Santiago Calatrava located in the Ciutat de les Arts i les Ciències (City of Arts and Sciences) complex, Valencia, Spain. The building has a height of 80 m and occupies 5,000 m of elliptic space. Depending on the configuration of the space, a maximum seating capacity for 6,075 people can be reached.
L'Àgora was officially inaugurated in November 2009 to host the Valencia Open 500 ATP tournament, although the construction works were not completely finished.