Warsaw · on the Vistula
Warsaw WWII History
From the 1939 siege to a city rebuilt from paintings and memory — the six years that explain almost everything about how Warsaw looks today.
Photo by Przemysław Oskaldowicz on Unsplash
No European capital's 20th-century history is more visibly written into its streets than Warsaw's. Between 1939 and 1945 the city endured a siege, more than five years of brutal occupation, the destruction of one of the world's largest Jewish communities, a citywide armed uprising, and a deliberate, systematic demolition that left the historic centre in ruins. What stands today — including almost all of the "medieval" Old Town — was rebuilt afterward, in most cases from the ground up.
This guide walks through that timeline with the accuracy the subject demands, and points to where each chapter is covered in fuller depth elsewhere on this site.
01 · 1939
The Siege and the Start of Occupation
Germany invaded Poland on 1 September 1939, and the Luftwaffe began bombing Warsaw the same day. German ground forces reached the city's southwestern suburbs and the Wola district by 8 September, opening a siege that lasted roughly three weeks. Around 140,000 Polish troops, commanded by General Walerian Czuma and heavily outgunned by a besieging force of some 175,000 Germans with vastly superior artillery and air support, held out until the garrison capitulated on 28 September. The following day, the defenders left the city as prisoners of war, and German occupation began.
Occupation brought immediate and escalating persecution of Warsaw's Jewish population — then more than 350,000 people, close to a third of the city's residents and among the largest Jewish communities anywhere in the world. Within a year, German authorities had decreed the creation of the Warsaw Ghetto, sealed off from the rest of the city in November 1940. That story, and the armed uprising that followed within it in 1943, is covered in full in our dedicated guide.
For the rest of the population, occupation meant nearly five years of German administration under the so-called General Government, marked by mass arrests, executions, the closure of Polish schools beyond a basic level, and constant surveillance by the Gestapo. An underground state operated in parallel throughout — clandestine schools, a secret press, and the Home Army (Armia Krajowa), the resistance movement that would answer to the Polish government-in-exile in London and, in August 1944, launch the uprising that gives this occupation its defining final chapter.
The Ghetto, the 1943 Uprising, and where this history is remembered today.
02 · 1944
The Warsaw Uprising and the City's Destruction
At 17:00 on 1 August 1944 — "W-hour" — the Polish underground Home Army launched a citywide uprising against the German garrison, intending to liberate Warsaw before the advancing Soviet front arrived and to assert Polish sovereignty ahead of it. Soviet forces, meanwhile, halted on the opposite bank of the Vistula for much of the fighting rather than crossing to help — a decision still debated by historians as either military caution, a deliberate choice to let a resistance movement loyal to the London government-in-exile be destroyed, or some combination of both. The Home Army fielded somewhere between 40,000 and 50,000 fighters in Warsaw, but by most estimates only around one in six to one in ten of them had a weapon on the uprising's first day, and the district's ammunition reserves were sufficient for roughly three days of fighting. They held out for 63 days across the city before capitulating on 2 October 1944.
The human cost was severe. Historians' estimates place civilian deaths during the Uprising at roughly 150,000 to 200,000, the large majority from mass executions and indiscriminate killing rather than combat. In the weeks after the capitulation, German forces expelled nearly all of Warsaw's remaining population — around 550,000 residents plus another 100,000 from surrounding towns — through a transit camp at Pruszków, from where tens of thousands were sent to forced-labor or concentration camps and the rest scattered elsewhere under German control.
With the city emptied, German engineering units spent the following months systematically burning and dynamiting what remained, block by block — a deliberate act of destruction, not incidental war damage. By the time Soviet and Polish forces entered Warsaw on 17 January 1945, an estimated 85% or more of the city's buildings had been destroyed, with the historic centre specifically cited at over 85% razed. Few cities in modern history have been more comprehensively erased.
The full story of the 63-day Uprising, told in the Wola district where much of the earliest fighting and mass killing took place.
03 · 1945 and after
Rebuilding a City From Paintings and Memory
Liberation left Warsaw a field of rubble rather than a city. The Polish government, faced with a choice between building something new or reconstructing what had stood before, chose reconstruction — and the Warsaw Reconstruction Office (Biuro Odbudowy Stolicy), formed within months of liberation, took on a project with no real precedent anywhere: rebuilding an entire historic quarter using whatever documentary evidence had survived.
The single most valuable resource turned out to be a set of 18th-century cityscape paintings of Warsaw by the Venetian artist Bernardo Bellotto, court painter to Poland's last king and often confused with his uncle Canaletto, whose meticulous street-level views gave planners detail that photographs alone could not. Architecture students and conservators cross-referenced these paintings against surviving rubble, pre-war photographs, and archival drawings, deliberately recreating the district's late-18th-century appearance — judged the richest and most reliable visual record — rather than its immediate pre-war state.
Reconstruction of the Old Town ran from 1945 to roughly 1953, funded substantially through public subscription, with ordinary Varsovians donating toward rebuilding their own city. In 1980, UNESCO inscribed the Historic Centre of Warsaw on the World Heritage list — an unusual choice, since it recognized not an ancient survivor but a 20th-century reconstruction, citing it as an outstanding example of near-total restoration spanning the 13th through 20th centuries.
The reconstruction story in full, plus a walking guide to what stands there today.
04 · Questions
Frequently Asked Questions
How much of Warsaw was actually destroyed in WWII?
By the time Soviet and Polish forces entered the city in January 1945, an estimated 85% or more of Warsaw's buildings had been destroyed — a figure that includes both the 1939 siege damage and, above all, the systematic demolition German forces carried out after the 1944 Uprising's capitulation. The historic centre specifically is also cited at over 85% destroyed, the figure behind its UNESCO listing.
What is the difference between the Warsaw Ghetto Uprising and the Warsaw Uprising?
They were separate events roughly 16 months apart. The Ghetto Uprising (April–May 1943) was Jewish armed resistance against the Nazi deportation of the ghetto's remaining population. The Warsaw Uprising (August–October 1944) was a much larger, citywide insurrection by the Polish Home Army. See our dedicated Jewish heritage guide for the 1943 Uprising in full.
Why did the Soviet army not help during the 1944 Uprising?
Soviet forces halted on the opposite bank of the Vistula for much of the Uprising rather than crossing to relieve the city, a decision historians still debate — whether it reflected military necessity, a deliberate choice to let the Polish Home Army (which answered to the London-based government-in-exile rather than Moscow) be destroyed, or some mix of both. The Red Army did not enter Warsaw until January 1945.
How was the Old Town rebuilt so accurately?
Largely from a set of 18th-century cityscape paintings by the Venetian artist Bernardo Bellotto (often confused with his uncle Canaletto), cross-referenced against surviving photographs, architectural drawings, and measurements taken from the rubble itself. See our Stare Miasto guide for the full reconstruction story.
Where can I learn more about this history in person?
The Warsaw Uprising Museum covers the 1944 Uprising in depth; POLIN Museum and our Jewish heritage guide cover the Ghetto and its 1943 Uprising. Both sit within a reasonable walk or short tram ride of each other.
✦ Verify before you go
Sources & official links
We verify prices, hours, and dates against official pages. They change without notice — confirm time-sensitive details at the source before you go.
- UNESCO World Heritage Centre — Historic Centre of Warsaw — Official inscription details and the case for the reconstruction's heritage value.
- Warsaw Rising Museum (official) — The 1944 Uprising in full, from the museum devoted to it.
- United States Holocaust Memorial Museum — Warsaw — Verified background on the occupation and the Warsaw Ghetto.