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. Today, Merchiston Castle is part of the Merchiston Castle School, an independent school that provides education for boys and girls. The castle's rich history and architecture make it a notable landmark in the area, attracting visitors interested in Scotland's heritage.