Kamienica przy Rynku 1 we Wrocławiu, Art Nouveau townhouse at Market Square, Wrocław, Poland.

Kamienica przy Rynku 1 is a five-story Art Nouveau building with a two-story mansard roof, designed by Hermann Wahlich and completed in 1907. Its reinforced-concrete frame is expressed by ornamental pilasters, with large shop windows on the first three floors and three smaller windows on the two upper floors. On the Market Square side, a two-plane facade sets a five-story single-axis avant-corps in front of the main building, both topped with gables bearing geometric volutes; the volutes carry the construction date and the initials of owner Ludwig S. Wittemberg. On Mikołaja Street, a seven-axis elevation has the main entrance through a stair hall, above which rises a five-story bay window with a domed helm and sandstone floral carving on both sides.

A corner building stood here from the 14th century; its facade was rebuilt around 1755 and again in 1802–1804 in a Baroque-Classical style. In 1906 this house was demolished and the Wrocław architect Hermann Wahlich designed a new Art Nouveau building, completed in 1907 as the Geschäftshaus Ludwig Wittemberg. From 1927 it housed the German National People's Party.

From 1945 the building was adapted for the Krawiecka Spółdzielnia Pracy POLMODA tailoring cooperative, with shops on the ground floor and sewing rooms on the upper floors. In the 1970s the ground floor held the Otex clothing shop. Between 1997 and 2002 the building housed the studios of Radio Kolor.

The main entrance is on Mikołaja Street, through a stairwell beneath a five-story bay window topped with a domed helmet. The two-plan facade on the Market Square side is set back to open the view toward St. Elisabeth's Church. The building stands at the corner where Mikołaja Street meets the Market Square.

The two-tiered facade was designed to open a view of St. Elizabeth's Church from the Market Square. The date of construction and the initials of owner Ludwig S. Wittemberg are carved on the volutes of the gable.