The old parish seat was situated in Grodzka Street, opposite the place where the Collegiate Church of All Saints once stood. These days, it is where you can find the Market Hall, traditionally called the “market shed”. Its construction started in 1913, but the outbreak of World War I interrupted the works. Designed in the style of Polish neo-Renaissance and modelled after the hall in Wrocław, it was only completed in 1924. Attic themes were incorporated into the building façades, while the exterior wall finish facing the market square bears the coat-of-arms of Jarosław. Inside the market hall, on the northern wall, there is a clock (currently out of operation). Its mechanism bears the initials G.B., which means that the watchmaker was the company founded by Gustav Becker, the producer of some of the best clocks in the world. The market hall in Jarosław is now a place of retail trade.