It's the Valencia, Spain, City of Arts and Sciences (CAS).
I love living in a world with buildings like this.
Doctor Who: 4 things you should know about the futuristic city in Smile
It’s already one of Valencia in Spain’s most famous tourist attractions.
Yeppers, I had to look up it last night while watching the show.
+Stan Pedzick Same here. 😀
(And +Kay Hill's comment: "Geeks of a feather, nerds forever.")
At least some of these are mostly abandoned, or they were when I was there: just sitting empty with a rocket sitting between them, just as they were when the world's fair closed down.
Cool. Just watched this eposode with my son. We're both avid 'Whovians!' 😀