The synagogue, built in 1863, was completely destroyed by fire in 1893. It was rebuilt between 1895 and 1896 on the former Gartenstraße (today Roosevelt-Straße). In the Reichspogromnacht 09-10 November 1938 it was probably only looted, but not set on fire. In 1945 a place of worship of the Greek Orthodox Church of the Transfiguration of the Lord was established in the synagogue, which exists to this day.

The Jewish cemetery in Mrągowo (Sensburg) was established in 1859 at today's Brzozowa Street 2. The necropolis was located at the end of the Catholic cemetery, on the land that Justyna Timnik, the mayor's widow, had donated to the Jewish community. Until the cemetery was established, the Jews from Mrągowo (Sensburg) buried their dead in Ryn (Rhine) or Młynów (Upper Mühlenthal). Even before the "Kristallnacht" the cemetery was vandalized.

The Jüdish cemetery of Toruń (Thorn) is located in the suburb of Jacob, between ul. Antczaka, ul. Pułaskiego and ul. Konopackich. The exact date of its creation is not known. Most likely, it existed already since 1723.

After the Überfall of the fascist German Wehrmacht on Poland, the Nazis intended to destroy the Jüdische necropolis. These plans were not realized. A realization of the destruction took place only in the period of the People's Republic of Poland under the leadership of the communist Polish United Workers' Party in 1975.

This is currently the only preserved synagogue in the Olsztyn district.

The construction of the first synagogue in Memel was initiated and financed in 1835 by the lumbermen Mordechai Wasbutzki and Meir Lifschitz. It was a square building with an entrance on the side of Synagogenstr. In the spring of 1939, after the Memel area was rejoined to Germany, the destruction took place. The area has not been rebuilt until the present.
Note: Sometimes there is the designation Polish School or also prayer house (Because there was only one official synagogue was allowed to exist on site).

At the turn of the century, the innkeeper Leib Robinsky ran the inn named after him in Tattamischken, which was located directly on the Memel River. The river was an important trade route at that time and the inns sold many other useful things besides drinks and food. Robinsky was a member of the nearby Jewish community of Russ. He had numerous children who went from here to different places and countries. Today there is nothing left of the former village after many floods and disuse. Today at the place is a later built vacation resort.

In 1816 the stone synagogue was built. When in 1914 during World War I large parts of the city burned down, the synagogue building was also badly damaged. Pictures show that only the outer walls were preserved. In 1923 a reconstruction or a new building was planned, but this was not realized due to lack of money. The reconstruction carried out in 1930 retained the outer walls. The (no longer existing) mansard roof with curved gables was replaced by a hip roof 

A large fire  destroyed the entire city center in 1925, including the then wooden synagogue. The subsequently rebuilt synagogue was completed in 1928, with some rebuilding up to 1936.  At the end of June 1941, SS men from nearby Heydekrug locked up Jewish men from the town in the synagogue and later transported them away.

After the war from 1945, the building was used as a cultural center, and later as a warehouse and sports hall. After that, it stood empty for many years. Since 2007, the building has been renovated.