The Grassmarket is an open area situated below Edinburgh Castle at the west end of the Cowgate. It was, for many centuries, an important venue for commercial and social activity in the Old Town. A weekly market was held here from the 15th to the early 20th century. It was also the site of many public executions. The Grassmarket continues to be a popular area for socialising, with a large number of pubs and restaurants. Edinburgh Castle is perhaps the city's most famous landmark. It stands on top of the remaining core of an extinct volcano. Excavations suggest the site was inhabited by Bronze Age man as early as 900 BC, and was fortified by Iron Age man roughly 2000 years ago. The oldest part of the present day Castle is St Margaret's Chapel, built in the early 12th century. The Castle holds the Honours of Scotland and more recently has welcomed back the Stone of Scone otherwise known as the Stone of Destiny.