Although the Polish Army Museum was established back in 1920 by a decree of Marshall Józef Piłsudski, the institution never had its own headquarters where it could present its unique collection, now amounting to over 300,000 exhibits. Today, after more than 100 years of existence, the museum can finally invite the public to its modern headquarters, which also includes spaces for exhibitions and cultural events.The WXCA Architectural Design Studio won the international architecture and urban design competition for the new seat of the Polish Army Museum in 2009. The building comprises eight functional blocks (housing the permanent exhibition, a temporary exhibition hall, an audiovisual block with a capacity of up to 100 people, technical, office and administrative facilities).The new building of the Polish Army Museum is a component of a multi-stage state investment of the representative Museum Complex at the historical Warsaw Citadel – forming one of the largest and most modern museum complexes in contemporary Europe.