During the Grossaktion Warsaw, which began on 22 July 1942, Jews were deported in crowded freight cars to Treblinka twice daily, in the early morning, often after an overnight wait, and in mid-afternoon.
On some days as many as 10,000 Jews were deported.
An estimated 300,000 Jews were taken to the Treblinka gas chambers; some sources describe it as the largest killing of a community in World War II.
The mass deportation action ended on 21 September 1942, although trains to Treblinka continued to depart from 19 April 1943 until the end of the Warsaw Ghetto Uprising in 1943.

The Warsaw Umschlagplatz was created by fencing off a western part of the Warszawa Gdańska freight train station that was adjacent to the ghetto.
The area was surrounded by a wooden fence, later replaced by a concrete wall.
 Railway buildings and installations on the site, as well as a former homeless shelter and a hospital were converted into a prisoner selection facility.
The rest of the train station served its normal function for the rest of the city during the deportations.

The railway leading to the square was originally constructed in 1876, as a side rail to the city's main line.
Warehouses and other buildings were built between 1921 and 1935.

After the German invasion of Poland in September 1939, and the occupation of the country, the square came under the administration of a dedicated German institution, the Transferstelle ("Transfer Bureau").
Originally its purpose was to oversee the flow of goods between the newly established Warsaw Ghetto and the "Aryan Side" of Warsaw.
At the time the ghetto's inhabitants referred to the square as "Umschlag".
At the end of January 1942 the southern portion of the square was incorporated into the ghetto.
During the Grossaktion Warsaw, which began on 22 July 1942, Jews were deported in crowded freight cars to Treblinka twice daily, in the early morning, often after an overnight wait, and in mid-afternoon. On some days as many as 10,000 Jews were deported. An estimated 300,000 Jews were taken to the Treblinka gas chambers; some sources describe it as the largest killing of a community in World War II. The mass deportation action ended on 21 September 1942, although trains to Treblinka continued to depart from 19 April 1943 until the end of the Warsaw Ghetto Uprising in 1943.
The Warsaw Umschlagplatz was created by fencing off a western part of the Warszawa Gdańska freight train station that was adjacent to the ghetto. The area was surrounded by a wooden fence, later replaced by a concrete wall.  Railway buildings and installations on the site, as well as a former homeless shelter and a hospital were converted into a prisoner selection facility. The rest of the train station served its normal function for the rest of the city during the deportations.
The railway leading to the square was originally constructed in 1876, as a side rail to the city's main line. Warehouses and other buildings were built between 1921 and 1935.
After the German invasion of Poland in September 1939, and the occupation of the country, the square came under the administration of a dedicated German institution, the Transferstelle ("Transfer Bureau"). Originally its purpose was to oversee the flow of goods between the newly established Warsaw Ghetto and the "Aryan Side" of Warsaw. At the time the ghetto's inhabitants referred to the square as "Umschlag". At the end of January 1942 the southern portion of the square was incorporated into the ghetto.
Umschlagplatz