This location is a first of sorts on couple of fronts, one is that this is the first location features a movie starring King Khan and two, this is the first location that is located in the United Kingdom. We came across this location when we were searching for the beautiful castle used in the title song of the Shah Rukh Khan starrer Kuch Kuch Hotai Hai and during the course of our search, we also found out that the fort has been used in the Tamil movie Kandukondein Kandukondein starring Aishwarya Rai.

About the location (from Wiki):
Eilean Donan is a small island in Loch Duich in the western Highlands of Scotland. It is connected to the mainland by a footbridge and lies about half a mile from the village of Dornie. Eilean Donan (which means simply “island of Donnán”) is named after Donnán of Eigg, a Celtic saint martyred in the Dark Ages. The island is dominated by a picturesque castle.

The original castle was built in the early 13th century as a defense against the Vikings.[3] By the late 13th century it had become a stronghold of the Mackenzies of Kintail (later the Earls of Seaforth). In 1511, the Macraes, as protectors of the Mackenzies, became the hereditary Constables of the Castle. The castle is one of the most photographed monuments in Scotland and a popular venue for weddings and film locations.

Movies shot at this location:
Kuch Kuch Hota Hai from Kuch Kuch Hota Hai
Kandukondein kandukondein from Kandukondein Kandukondein
Neend Udha Raha Hai from Kuch Khatti Kuch Meethi