Princes Street Gardens are two adjacent public parks in the centre of Edinburgh, Scotland, lying in the shadow of Edinburgh Castle. The Gardens were created in the 1820s following the long draining of the Nor Loch and building of the New Town, beginning in the 1760s.

The Nor Loch, also known as the Nor' Loch and the North Loch, was a man-made loch formerly in Edinburgh, Scotland, in the area now occupied by Princes Street Gardens and Waverley station which lie between the Royal Mile and Princes Street.