TP S.S. Tower - it houses the headquarters of its investor, the telecom operator Telekomunikacja Polska S.A. (TP S.A.)
It was completed in December 2003, has 30 overground and 5 underground floors, extending 16.5 metres below ground level and rising to 128 metres above ground, with a helicopter landing pad atop the building.
A unique feature of the building is the external elevator shaft, sloped 14°, which connects the street level with one of the higher office floors.