Königsbau, Commercial building in Stuttgart-Mitte, Germany

The Königsbau is a commercial building in Stuttgart-Mitte, Germany, located at the northwest end of Schlossplatz. It features a long colonnade of 34 columns and houses shops and cafes, with the Königsbau-Passagen retail complex attached to its rear.

Built between 1856 and 1860 as a business, concert and ball house, the Königsbau was commissioned by King Wilhelm I and designed by Christian Friedrich von Leins after Johann Michael Knapp withdrew due to poor health. Severely damaged in World War II, it was rebuilt in 1958 and 1959, and until 2002 it housed the Stuttgart Stock Exchange.

The name Königsbau, meaning 'royal building', reflects its origin as a venue for concerts and balls under King Wilhelm I. Today, the colonnade serves as a meeting point and a backdrop for events on Schlossplatz, while the inner spaces host shops and cafes that draw both locals and visitors.

The colonnade and the shops inside are easy to explore on foot, and the central location makes it a convenient stop while walking around the square. Visitors can enter from Schlossplatz or from the adjacent Königsbau-Passagen, which connects to the main shopping street.

The colonnade of 34 columns stretches 135 meters in length, making it one of the longest in the city. The Königsbau-Passagen, added in 2006, cover 45,000 square meters and create a modern contrast to the 19th-century facade.