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Photo: Hubert Śmietanka, CC BY-SA 2.5 via Wikimedia Commons
Famous tombs: Estera Rachela Kamińska, Isaac Loeb Peretz, Ludwig Zamenhof (the creator of Esperanto). Also contains a symbolic monument to Janusz Korczak (he died in a concentration camp).
The Warsaw Jewish Cemetery is one of the largest Jewish cemeteries in Europe and in the world. Located on Warsaw's Okopowa Street and abutting the Christian Powązki Cemetery, the Jewish necropolis was established in 1806 and occupies 33 hectares of land. The cemetery contains over 250,000 marked graves, as well as mass graves of victims of the Warsaw Ghetto. Although the cemetery was closed down during World War II, after the war it was reopened and a small portion of it remains active, serving Warsaw's existing Jewish population.
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Cmentarz Ewangelicko-Augsburski Cmentarz Ewangelicko-Reformowany
Famous tombs: Anna German, Leopold Kronenberg, Józef Simmler, Stefan Żeromski.
Cmentarz Komunalny - Powązki), previously: Military Cemetery (Cmentarz Wojskowy)
Contains the Avenue of the Meritorious (Aleja Zasłużonych), as well as mass graves of the participants of the November Uprising (1830–1831), January Uprising (1863–1864), World War I (1914–1918), Polish-Bolshevik War (1920–1922), World War II (1939–1945) and Warsaw Uprising (1944).
Cmentarz Ewangelicko-Reformowany
Contains Halperts' Chapel (Kaplica Halpertów). Famous tombs: Wojciech Gerson, Tadeusz Stefan Jaroszewski, Emil Wedel, Szymon Bogumił Zug.
Muzeum Powstania Warszawskiego
Enormously fascinating, The Warsaw Rising Museum is a moving experience that anyone to Warsaw must visit. This museum will almost certainly not bore anyone, especially with the museum's superb use of multimedia. The museum has bilingual displays in Polish and English. The museum does a good job of explaining the perceived history of the insurgents and the Uprising in the years following the Second World War. You can also take an elevator to the rooftop to see the surroundings of Wola district. If you go on Sunday, they have chapel services at 12:30.
Warsaw Gasworks Museum
A museum dedicated to the history of gasworks and provision of municipal gas, aptly located in Warsaw's old gasworks.