This museum housed an exhibition in which patrons laid on their backs and looked up through thick fog at a mirrored ceiling illuminated by an artificial sun, which was the The Weather Project by Olafur Eliasson. Yuan Chai and Jian Jun Xi filmed themselves urinating on a sculpture found in this museum. Millions of porcelain 
This museum housed an exhibition in which patrons laid on their backs and looked up through thick fog at a mirrored ceiling illuminated by an artificial sun, which was the The Weather Project by Olafur Eliasson. Yuan Chai and Jian Jun Xi filmed themselves urinating on a sculpture found in this museum. Millions of porcelain sunflower seeds blanketed the floor of this museum's (*) Turbine Hall in an 2010 exhibit by Ai Weiwei. This building's architect, Giles Gilbert Scott, designed a similar building at Battersea, which was also a proposed site for this museum, in 1994. Its famous paintings include Warhol's Marilyn Diptych and Lichtenstein's Whaam!. For 10 points, name this museum housed in the former Bankside Power Station, a branch of the Tate that is the world's most-visited contemporary art museum.
This museum housed an exhibition in which patrons laid on their backs and looked up through thick fog at a mirrored ceiling illuminated by an artificial sun, which was the The Weather Project by Olafur Eliasson.
Tate Modern [prompt on "Tate (Gallery)"]