Eilean Donan Castle is a picturesque castle located on an island at the meeting point of three sea lochs in the Scottish Highlands. Built in the 13th century, it was originally constructed to defend against Viking invasions. The castle has been restored and is now a popular tourist attraction, known for its stunning views and historical significance. The castle is named after Saint Donan, a 6th-century monk who is believed to have lived in the area. Surrounded by beautiful landscapes, Eilean Donan has appeared in various films and is often considered one of Scotland's most iconic landmarks.