I am a great fan of Santiago Calatrava's architecture, and I was absolutely amazed to visit this marvellous place.
The City of Arts and Sciences is an entertainment-based cultural and architectural complex and
the most important modern tourist destination in the city of Valencia. It's also one of the 12 Treasures of Spain.

Lisbon Oriente Train Station is also Calatrava's design:
http://www.pbase.com/anitta/image/166195595