Mandelbrot, physicist Joseph Rotblat, biochemist Casimir Funk, and Moshe Prywes, an Israeli physician who was the first President of Ben-Gurion University of the Negev. Warsaw was the beloved city of Isaac Bashevis Singer, which he described in many of his novels: "Warsaw has just now been destroyed. No one will ever see the Warsaw I knew. Let me just write about it. Let this Warsaw not disappear forever", he wrote. Notable sportspeople born in Warsaw include footballer Robert Lewandowski and tennis player Iga Świątek. Rankings Largest capital cities of the European Union: ranked 6th (2021). Most expensive cities: ranked 113th of 144. Mercer's Quality of Living Ranking: ranked 82nd (2019) International relations Twin towns – sister cities Warsaw is twinned with: Astana, Kazakhstan (2002) Berlin, Germany (1991) Chicago, United States (1960) Düsseldorf, Germany (1989) Hanoi, Vietnam (2000) Kyiv, Ukraine (1994) Riga, Latvia (2002) Rio de Janeiro, Brazil (1997) Seoul, South Korea (1996) Taipei, Taiwan (1995) Tel Aviv, Israel (1992) Vilnius, Lithuania (1998) Former twin towns: Grozny, Russia (1997–2022) Moscow, Russia (1993–2022) Partnership and friendship Warsaw also cooperates with: Budapest, Hungary (2005) Buenos Aires, Argentina (1992) Coventry, United Kingdom (1957) The Hague, Netherlands (1991) Hamamatsu, Japan (1990) Harbin, China (1993) Île-de-France, France (1990) Istanbul, Turkey (1991) Madrid, Spain (1981) Oslo, Norway (2006) Paris, France (1999) Saint-Étienne, France (1995) Toronto, Canada (1990) Vienna, Austria (1991) Yerevan, Armenia (2013) Former partner cities: Saint Petersburg, Russia (1997–2022) See also C40 Cities Climate Leadership Group Destruction of Warsaw Legia Warsaw List of tallest buildings in Warsaw List of honorary citizens of Warsaw Street names of Warsaw Tourism in Poland Various battles of Warsaw Various treaties of Warsaw Warsaw concentration camp Warsaw subdialect Warsaw Fire Guard Notes References Bibliography Official webpage of Warsaw includes 360° panoramas of the UNESCO listed area. District Police Headquarters – Warsaw II (part of Warsaw Metropolitan Police) Warsaw Guide. Online City Guide for Warsaw in Poland. Retrieved 17 May 2015. What to do and see in Warsaw Further reading External links Capitals in Europe Cities and towns in Masovian Voivodeship City counties of Poland Holocaust locations in Poland Recipients of the Silver Cross of the Virtuti Militari World Heritage Sites in Poland Populated places established in the 13th century Jewish communities destroyed in the Holocaust