adriatic ancient architecture attraction balkan bay boat boka building citadel city coast coastline europe european famous fjord fort gulf harbor home house kotor kotorska landscape marine medieval mediterranean Montenegro mountain old outdoor port rock roof sea ship shore spring tourist tower town travel trip unesco vacation view village water yacht accommodation angles apartment-blocks apartments box-like boxed connected connections distinctive elements exterior external foliage glass greenery height high hill hillside hilltop homes houses light linear lines modern modernistic mountains mountainside mountaintop multi-storey multi-story perspectives plain sloped slopes squared straight structure structured style trees units views walls windows