The Clachaig Gully in Glencoe

Harry Potter

Harry Potter's Hagrid's hut was built near the Clachaig Gully in Glencoe.  It was dismantled after filming.

The scene with the Ford Anglia flying over the train is Glenfinnan Viaduct in The Chamber of Secrets.

Hogwarts Lake is Loch Shiel.

Rannoch Moor is the the place where the Death Eaters board the train in Harry Potter and The Deathly Hallows: Part 1.

Loch Eilt is a freshwater loch between the villages of Glenfinnan and Lochailort. The island featured in Harry Potter is called Eilean na Moine. It was used as Dumbledore's grave, which was later, digitally placed on Loch Arkaig, in Harry Potter and the Deathly Hallows: Part 1

For information on a lot more locations please visit the link below.