The castle or citadel of Poenari is found in Romania, which is accessed from the Transfăgărășan highway (Just about the most gorgeous on the planet), about 25km from Curtea de Argeș, the historic capital of Wallachia. It is found within an elevated placement throughout the valley on the Argeș river, https://www.tourcounsel.com/2021/11/poenari-castle.html