The Stavros Niarchos Cultural Center looks like an artificial hill that rises towards the south part of the site to a maximum height of 32 meters (104 feet), offering great views of the sea and the bay of Kallithea. A sloping park, planted with indigenous species and conceived by New York landscape designer Deborah Nevins, tops the opera house and the library. Related: London to get another Renzo Piano-designed tower at Paddington Station A large solar array was installed on the roof of the complex, which Piano calls the "flying carpet." Inside, various functions and programs are organized around a central gathering space inspired by the agora, a typology dating back to ancient times.