| Merchiston Castle | |
|---|---|
| Merchiston, in Edinburgh, Scotland NT2417071800 | |
 Merchiston Castle in 2012 | |
| Type | L-Plan tower house |
| Site information | |
| Owner | Napier University |
| Open to the public | No |
| Site history | |
| Built | c. 1454 |
| Built by | probably Alexander Napier |
| In use | 15th century to 21st century |
| Materials | Stone |
Merchiston Tower, also known as Merchiston Castle, was probably built by Alexander Napier, the 2nd 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.