RYSY Architekci Rafał Sieraczyński is an architectural practice based near Warsaw, Poland, led by architect Rafał Sieraczyński. Active in the Polish architectural scene, the firm specializes in large-scale, often public or urban projects, and is recognized for its focus on simplicity, repetition, and context-driven solutions. The studio notably avoids decorative excess in its designs, prioritizing clear geometric forms and fitting the intervention to its setting.
Projects by RYSY Architekci include a range of typologies such as transportation, landscape, and educational facilities. Examples are the Transport Hub in Solec Kujawski, which revitalized an old railway site, and the Observation Tower in Warsaw’s Targówek district, a concept drawing from the area’s postindustrial character. Another notable project is the Health Resort Park in Horyniec-Zdrój in southeastern Poland, which involved the reimagining of a historic resort landscape. The firm has also designed an Integrated Nursery School in Góra Kalwaria and contributed to the Market Town in Żołynia.
RYSY Architekci has been recognized within industry rankings, being listed among the top 25 and 30 architectural practices in Poland. As of recent counts, the studio's portfolio includes at least six realized projects. While its core is in Warsaw’s orbit, the office’s completed work spans Poland, with particular engagement in projects that reinterpret public infrastructure and open spaces. The practice’s work is consistently described as rooted in a clear structural logic and careful response to place.