Ostrovní is a modern residential housing project built on a gap site surrounded by historic architecture. It is situated in the heart of Prague, near the National Theatre, just a couple of streets away from the Wenceslas Square. The shape of the land plot called for a unique construction solution. While limited space was a concern, the architects managed to fit in 2 apartments with light-flooded rooms onto each floor. The same is true for the main staircase. Two residential units located on each floor are entered from the hallway. The building houses the total of 8 apartments, including a maisonette occupying two top floors.