Sobieskiego 100, Residential complex in Mokotów, Poland

Sobieskiego 100 is a residential complex in Mokotów consisting of two concrete tower blocks connected by an aerial pedestrian bridge. The structure houses approximately 100 apartments across 11 floors and originally included on-site amenities such as a kindergarten, telephone exchange, basketball court, and movie theater.

Built in 1978 under an agreement between the Soviet Union and the Polish People's Republic, the complex served as accommodation for Soviet diplomats until the mid-1990s. The building then transitioned to different uses as political circumstances changed.

Residents nicknamed the complex "Szpiegowo" (Spyville) from rumours that it housed KGB spies and a radio station. From 2005 to 2017, Club 100, a nightclub open only to holders of Russian passports, operated from an outbuilding at the front.

The complex stands on the Royal Route at 100 Sobieskiego Street, next to Park Sielecki, and is best viewed from the pavement outside its steel fence. The grounds, including the pond to the east, are closed; entry is only possible during guided events or after the planned conversion into municipal housing.

The complex's nickname "Spyville" (Szpiegowo) fed legends of KGB safe houses, a hidden radio station, underground tunnels and cellars used as a makeshift prison. From 1998 the flats were briefly rented out illegally by the firm Fart, prompting a 2005 police raid; until 2017, Club 100, a nightclub open only to holders of Russian passports, operated from an outbuilding at the front.