Dominating the north side of the West Port at its junction with Lady Lawson Street is Argyle House, built in 1968 to designs by Michael Laird and Partners. Long used as local and national government offices, it now houses CodeBase, the largest tech incubator in Scotland, University of Edinburgh offices, along with various other businesses. Cited as one of Edinburgh's 'ugliest buildings', it provides its north-facing occupants with an impressive prospect of Edinburgh Castle Rock, while blotting out the same for anyone at street level.