In　the　realm　of　sustainable　city　planning,　a　nuanced　understanding　of　how　individuals　perceive　environmental　elements　and　their　emotional　responses　holds　paramount　importance.　The　purpose　of　this　study　was　to　investigate　how　individuals　perceive　the　audiovisual　environment　and　its　relationship　to　place　attachment　within　Kulangsu,　a　World　Cultural　Heritage　site.　Specifically,　the　researchers　explored　the　moderating　effects　among　soundscape　characteristics　(pleasantness　and　eventfulness),　visual　landscape　satisfaction,　and　place　attachment.　The　study　employed　on-site　questionnaires　to　collect　data　from　participants.　Exploratory　Factor　Analysis　(EFA)　and　stratified　regression　analyses　were　used　to　explore　moderating　effects.　Our　findings　revealed　that　participants　hold　positive　views　toward　both　soundscape　and　visual　landscape,　with　functional　dependence　on　place　outweighing　emotional　attachment.　Key　insights　emerged:　(1)　various　characteristics　of　the　soundscape　yield　different　moderating　effects.　Specifically,　highly　pleasant　or　minimally　eventful　soundscapes　significantly　strengthen　the　positive　impact　of　visual　landscape　satisfaction　on　place　attachment.　(2)　visual　landscape　emerges　as　a　crucial　moderator　and　high　visual　satisfaction　amplifies　the　positive　impact　of　a　pleasant　soundscape,　while　lower　satisfaction　intensifies　the　positive　effect　of　an　eventful　soundscape　on　attachment.　(3)　the　positive　correlations　between　visual　landscape　and　soundscape　remain　stable,　unaffected　by　the　moderating　influence　of　place　attachment.　These　results　suggest　that　both　soundscape　and　visual　elements　shape　attachment　differently,　providing　actionable　insights　for　urban　planners　aiming　to　create　sustainable,　culturally　sensitive　environment,　especially　within　World　Cultural　Heritage　sites.　The　findings　offer　a　holistic　perspective　on　the　dynamic　interplay　between　individuals　and　their　urban　environments,　informing　global　urban　policy.