Macbeth's burial site is the island of Iona, located off the west coast of Scotland. It is a small island in the Inner Hebrides and is known for its religious significance. Iona was the site of a monastery founded by St. Columba in 563 AD, and it is believed that Macbeth was buried there after his death in 1057. The island is now home to a Benedictine abbey and is a popular tourist destination.