More than 20 years after its last renovation, the historic “Gruba Kaśka” water tower on Plac Bankowy in Warsaw is once again on display in all its splendour. The 18th-century well, considered one of the most valuable historical monuments of the former capital, has undergone a comprehensive restoration carried out under the supervision of the conservator of monuments.
‘Gruba Kaśka’ and its history
“Gruba Kaśka” was built between 1783 and 1787. It most likely owes its name to its massive, cylindrical shape. In the past, it was the central feature of the now-defunct Tłomackie Square, and as late as the interwar period, Warsaw’s horse-drawn carriage drivers, amongst others, used to draw water from it. During the Second World War, the buildings in the area were almost completely destroyed. The well itself survived, though it sustained quite serious damage. Fortunately, it was rebuilt as early as 1947. Shortly afterwards, construction of the W-Z Route began, which completely altered the character of the well’s surroundings. Since then, this historic structure has stood between the busy carriageways of Solidarności Avenue.
Time has left its mark on the monument
The nearly 240-year-old water tower has since been exposed to intense vibrations caused by tram and car traffic, as well as pollution. It has been over 20 years since the last renovation, which is why numerous cracks, areas of missing plaster, chips and scuffs have appeared on the façade. Traces of vandalism, in the form of inscriptions and graffiti, were also visible. The poor condition of the building made it necessary to carry out extensive work to restore this unique relic of old Warsaw to its former glory.

Sandstone, timber and a historic turnstile
The renovation was carried out by the Municipal Roads Authority. As part of the work, the sandstone plinth and the granite paving stones surrounding the well were cleaned, gaps in the plaster were filled, and the metal and wooden elements were preserved and protected. Work was also carried out inside the building. The walls and wooden beams were restored, the rotten floor was completely replaced, and the historic windlass was reconstructed and refitted in its original position. The building has regained its former appearance and all its historical details.
‘Gruba Kaśka’ under supervision
Due to its status as a listed building, all work was carried out in accordance with the conservation officer’s guidelines. An ornithologist was also involved in the project, as birds regularly nest in the window recesses. The completed renovation has restored “Gruba Kaśka” to its former aesthetic, safeguarded its valuable historic fabric and preserved for future generations a rare trace of pre-war Warsaw on the left bank of the Vistula.
source:Warsaw City Hall
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