wall with windows of residential apartments in an old high-rise building overlooking the courtyard at montmartre in paris

paris old french multistory buildings decorative cityscape city urban france design arch transitions montmartre curved residential structures stone accent exceptional architecture building geometric lifestyle external house decor courtyard apartments facade built structure privacy gated development roof inside private skyscrapers home sight attract outdoor balcony exterior europe tourists historical tracery pavement town engineering architectural lofts wall famous suspended loft tourism upstairs cockloft curve door mansard windows high-rise overlooking houses sculptural bas-reliefs wooden shutters impromptu attic add-ons crowds unique charm lifestyle