Inveraray Castle (pronounced / ˌɪnvəˈrɛərə / invə-REHRUHor / ˌɪnvəˈrɛərɪ / invə-REHREH; Scottish Gaelic Caisteal Inbhir Aora [ˈkʰaʃtʲəl̪ˠ iɲɪɾʲˈɯːɾə]) is a country house near Inveraray in the county of Argyll, in western Scotland, on the shore of Loch Fyne, Scotland's longest sea loch. [ 1 ] .