Man touching the old exterior wall from an abandoned hospital with gun shots from the first and second world war in Sljeme, Croatia

man touching wall ruin exterior abandoned hospital graffiti first world war second world war world war 2 building urbex sljeme croatia zagreb touch man touching wall gun shots wholes gun shot wholes sanatorium person backpack urbex people urban explorer historical landmark landmark historical middle aged male urban exploring abandoned world war hospital forest sljieme tuberculosis hospital building decay brestovac medical facility abandoned building clinic forgotten architecture post apocalyptic psychiatric hospital dark tourism europe