Sejm and Senate Complex (Polish: Kompleks budynków Sejmu Rzeczypospolitej Polskiej) are a complex of buildings located in central Warsaw, which house the bicameral Polish parliament – the Sejm and Senate of Poland.

The outer wall of the Meeting Hall is decorated with a frieze composed of eighteen stone plates with bas-reliefs made by Jan Biernacki and Jan Szczepkowski, symbolising inter alia: Liberation, craft, religion, fine arts, plowing, the press and education.

Its ceiling is supported by two rows of columns tapering downwards along the walls, which optically increase the length, height and width of the corridor.

From the Senate side, the corridor closes in with a decorative iron grate made by Jan Mizerski.

The Main Hall was rebuilt using designs of Andrzej Kaliszewski, with the cooperation of Barbara Kaliszewska and Bogdan Napieralski.

There were plans for its adaptation into a parliamentary museum, but after the completion of the renovation work in 1992 it was decided that the Sejm Commission would be held there.

On the north side, the central axis of the building is characterised by a flat break with an oval corner.

After the Second World War the longer wing of the hotel was extended southward, in accordance to Bohdan Pniewski's designs.

Thus, an inner courtyard was created in front of the hotel, where the gates from Wiejska and Górnośląska Street are leading towards.

The New House for Members of the Sejm was constructed on the basis of architect Małgorzata Handzelewicz-Wacławek's designs, with the cooperation of Andrzej Kaliszewski.

[10] In 2015, the conference room in the New House for Members of the Sejm, hosts the discussions of the Commission for Social Policy and the Family, named after Jacek Kuroń.

The altar and statues illustrating the Stations of the Cross, were done so by Jan Tutaj, funded by contributions from Sejm members, consecrated in June 2007 by Cardinal Kazimierz Nycz.

[12] The original chair of Pope John Paul II, used during the Holy Father's visit to the Sejm in 1999, is a very valuable element of the chapel.