Srebrenik Fortress

Srebrenik Fortress - Credit: Wikimedia Commons

Srebrenik Fortress (Bosnian, Croatian and Serbian: Tvrđava Srebrenik / Тврђава Сребреник; also known as: Gradina / Градина) is a fortress located near the city of Srebrenik in Bosnia and Herzegovina. It has been a national monument of Bosnia and Herzegovina since 2 November 2004. Read more on Wikipedia

type: military installation
date from: 13th century

Source: en.wikipedia.org