10. The Valencia Opera House (Valencia, Spain)
This beautiful work of art is the Valencia Opera House. It’s futuristic and unexpected shape was designed by the famous Santiago Calatrava. The building is 17 stories tall, and is 75 meters in height. It’s actually the tallest Opera House in the world. It is comprised of 4 separate halls that are filled with the newest technology needed to stage all sorts of theatrical and musical performances.