Jewish communities destroyed in the Holocaust

Warsaw, officially the Capital City of Warsaw, is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland. Its population is officially estimated at 1.86 million residents within a greater metropolitan area of 3.27 million residents, which makes Warsaw the 7th most-populous city in the European Union. The city area measures 517 km (200 sq mi) and comprises 18 districts, while the metropolitan area covers 6,100 km (2,355 sq mi). Warsaw is classified as an alpha global city, a major cultural, political and economic hub, and the country's seat of government. It is also the capital of the Masovian Voivodeship.

Thessaloniki (Greek: Θεσσαλονίκη ), also known as Thessalonica , Saloniki, Salonika, or Salonica , is the second-largest city in Greece, with slightly over one million inhabitants in its metropolitan area, and the capital of the geographic region of Macedonia, the administrative region of Central Macedonia and the Decentralized Administration of Macedonia and Thrace. It is also known in Greek as "η Συμπρωτεύουσα" (i Symprotévousa), literally "the co-capital", a reference to its historical status as the Συμβασιλεύουσα (Symvasilévousa) or "co-reigning" city of the Byzantine Empire alongside Constantinople.

Kutno is a city located in central Poland with 42,704 inhabitants (2021) and an area of 33.6 km (13.0 sq mi). It is the capital of Kutno County in the Łódź Voivodeship.

Košice (KOSH-it-sə, ; Hungarian: Kassa ) is the largest city in eastern Slovakia. It is situated on the river Hornád at the eastern reaches of the Slovak Ore Mountains, near the border with Hungary. With a population of approximately 230,000, Košice is the second-largest city in Slovakia, after the capital Bratislava.

Kreva (Belarusian: Крэва, Russian: Крево, Krevo; Lithuanian: Krėva, Krẽvas; Polish: Krewo) is an agrotown in Smarhon District, Grodno Region, Belarus. It serves as the administrative center of Krevas selsoviet.

Brody (Ukrainian: Броди, ; Polish: Brody; German: Brody; Yiddish: בראָד, Brod) is a city in Zolochiv Raion, Lviv Oblast, western Ukraine. It is located in the valley of the upper Styr River, approximately 90 kilometres (56 miles) northeast of the oblast capital, Lviv. Brody hosts the administration of Brody urban hromada, one of the hromadas of Ukraine. Population: 23,134 (2022 estimate).

Eger (EG-ər, AY-gər; ; also known by other alternative names) is the county seat of Heves County, and the second largest city in Northern Hungary (after Miskolc). A city with county rights, Eger is best known for its medieval castle, thermal baths, baroque buildings, the northernmost Ottoman minaret, and red wines. Its population of around 53,000 (2017) makes it the 19th largest centre of population in Hungary, according to the census. The town is located on the Eger Stream (a tributary of the Tisza river), on the hills between the Mátra and Bükk mountains.

Babruysk (Belarusian: Бабруйск, Babrujsk) or Bobruysk (Russian: Бобруйск, Yiddish: באָברויסק, Bobroysk, ) is a city in Mogilev Region, Belarus. It serves as the administrative center of Babruysk District, though it is administratively separated from the district. It is situated on the Berezina River. Babruysk occupies an area of 66 square kilometres (25 sq mi), and comprises over 450 streets whose combined length stretches for over 430 km (267 mi). As of 2024, it has a population of 207,351.

Saarbrücken (Rhenish Franconian: Sabrigge French: Sarrebruck Luxembourgish: Saarbrécken ; Latin: Saravipons; lit. 'Saar Bridges') is the capital and largest city of the state of Saarland, Germany. Saarbrücken has 181,959 inhabitants and is Saarland's administrative, commercial and cultural centre. It is located on the Saar River (a tributary of the Moselle), directly borders the French department of Moselle, and is Germany's second-westernmost state capital after Düsseldorf.

Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located 120 km (75 mi) south-west of Warsaw. As of 2023, Łódź has a population of 655,279, making it the country's fourth largest city.