Merchiston Tower, also known as Merchiston Castle, was probably built by Alexander Napier, the second Laird of Merchiston around 1454. It serves as the seat for Clan Napier. It was the home of John Napier, the 8th Laird of Merchiston and the inventor of logarithms, who was born there in 1550.
The tower stands at the centre of Edinburgh Napier University's Merchiston campus.
Address 16 Mardale Crescent, Edinburgh EH10 5AG, United Kingdom
Coordinates 55°55'59.98" N -3°12'50.095" E