One of amazing architecture designs by Santiago Calatrava together with Félix Candela: Hemispheric Planetarium in Valencia (Spain). With the building’s own reflection on the surrounding water pool, the building and its reflection becomes an eye. The bottom of the pool is covered by mirror to give the illusion. The planetarium itself is the center of the City of Arts and Sciences and called as the eye of knowledge. The whole concept blew my mind, after all, shouldn’t we have our eyes open to the knowledge and our surroundings?