Olesno is a town in Opole Voivodship, Poland about 42 kilometres north-east of the city of Opole. It is the capital of Olesno County and seat of the Gmina Olesno.
Wikipedia https://en.wikipedia.org/wiki/Olesno
Official Website https://olesno.pl/obiekt/mury-obronne
Address 13 Józefa Lompy, Olesno 46-300, Poland
Coordinates 50°52'32.546" N 18°25'11.418" E