The Heart of Midlothian is a heart-shaped mosaic, formed in coloured granite setts, built into the pavement near the West Door of St Giles High Kirk in the High Street section of the Royal Mile in Edinburgh. It is situated close to Parliament House, which formerly housed the Parliament of Scotland and is now the home of the Court of Session.
Together with brass markers bearing building dates, it records the position of the 15th-century Old Tolbooth, demolished in 1817, which was the administrative centre of the town, a prison, and one of several sites of public execution.
Wikipedia https://en.wikipedia.org/wiki/Heart_of_Midlothian_(Royal_Mile)
Address 375 High Street, Edinburgh EH1 1QS, United Kingdom
Coordinates 55°56'58.436" N -3°11'29.318" E