Iconic Moorish-Renaissance royal palace. If you are a fan of "Game of Thrones", In the fifth season of TV show the 700 year old former royal palace in Spain was used for the Water Gardens in the fictional city of Sunspear :)
Flamenco originated in South of Spain, and Seville is full with places where you can watch flamenco performance.
The Metropol Parasol, popularly known as the Mushrooms (Las Setas) is a five levels wooden structure. The upper level contains a lookout point and a panoramic route that covers most of the area. From there you have a beautiful view of the city.