View of Inverness in the Highlands of Scotland. Inverness is the largest of the Highland towns and is situated to the north of the Great Glen, where Loch Ness flows into the Moray Firth. The settlement at Inverness developed around a 6th century fortress on the Crag of Phadrig. The town grew rapidly around fort and the port and flourished with the development of the boat building and fishing industries. The town’s economic prosperity meant that it was a target and it was regularly attacked by both Scottish and English armies. By the 17th century the town was thriving again and Oliver Cromwell built a fortress here. By the 19th century the Caledonian Canal and the development of rail links with the south opened up Inverness and it became the administrative centre of the Highlands.