Central District Lagoon City - first self-sustainale development Central District Royal Suites – first solar panel facade Central District Cuza 99 – first active surfaces Central District 4 Elemente – green building Central District Cuza 99 – green facade Central District Lagoon City Prague – soil-water thermal transfer Central District Royal Suites – cool ceilings Central District Lagoon City - geoheatpumps and solar panels Central District Royal Suites - full automatic parking system Central District Lagoon City – water heat exchanger