In 1338 the councillors of the Old Town bought a large patrician house from the Volflin family and adapted it for their purposes.

New halls were established in the south wing, but only the council room on the upper floor was preserved in its original appearance.

The builder eschewed the traditional Gothic arch in favour of a rectangular window, adorning the thickness of the walls with panelled pilasters.

A moulded stone cross divides the window into four lights, the upper two of which are decorated with the armorial bearing of the Old Town of Prague and the Czech lion.

Between and slightly above them are the symbol "W", representing the royal initial of the Bohemian king Vladislaus II of Hungary (1456–1516) of the Jagiellon dynasty.

The Renaissance style is also apparent in another window situated just above the Gothic portal of the Volflin house from the 16th century.

The extensive reconstruction of the Old Town Hall at the turn of the 15th and 16th century included the erection of the east wing adjoining the north wall of the tower.

The original structure was badly damaged by modifications at the end of the 18th century, and finally disappeared completely, when during the 1840s a new wing was built in a Neo-Gothic style.

Both these wings were destroyed by fire during the Prague uprising in May 1945 and only the surviving torso adjoining the tower gives an indication of how this part of the Old Town hall looked.

There are two large mosaics on the lateral walls, created by Czech architect Vojtěch Ignác Ullmann according to designs by Mikoláš Aleš (1936–1939).

The mosaic on the western wall uses themes taken from national mythology, showing Princess Libuše foretelling the glory of Prague.

The ornaments of the vault contain coats of arms and symbolic depictions of great events from the nation's history.

There is a bronze statue by the Czech sculptor Josef Václav Myslbek, completed in 1885, depicting the legendary bard Lumír accompanied by the allegorical figure of Song.

Two smooth columns with shaft-rings support an entablature with a gabled cornice containing a relief bust of the king and a cartouche with the inscription "Senatus".

The portal is crowned by the armorial bearings of the Old Town flanked by allegorical figures representing Truth and Justice.

The adjoining Jiřík hall is decorated in the late-Gothic style with remnants of wall paintings dating from the end of the 15th century.

The wooden coffered ceiling, polychromed in the second half of the 16th century, rests on moulded beams strengthened in 1638 by the addition of strong gilded chains.

The walls are adorned by Gothic wooden panelling, a number of emblems, and the armorial bearings of the Old Town.

The semi-circular wall arch with rich mouldings is supported on slim columns terminating in Gothic pinnacles.

Later reconstructions changed the first design completely, but written records confirm that it already possessed all the basic features.

The most recent repairs were carried out after the World War II when the badly damaged original figures were replaced by statues by Vojtěch Sucharda.