Merchiston Castle is a historic castle located in Edinburgh, Scotland. Originally built in the 15th century, it served as the family home of the Napier family, known for their contributions to mathematics and engineering. The castle features a distinctive tower and is surrounded by beautiful gardens, making it a notable landmark in the area. Today, Merchiston Castle is part of the Merchiston Castle School, an independent school that occupies the site. The castle's rich history and architectural significance attract visitors, while its educational role continues to shape the lives of students in the region.