R.A.Friedman:
"Steamer" pencil and ink wash

Donald A. Jusko:
Acrylic painting, 22x30, "Train, Claus Spreckles" Wailuku Maui, 1995.
Four hours per day for 8 months, architecture takes a lot longer than
landscapes or portraits. The technique is in-between water color and
oil.
It certainly has advantages over both and is my preferred medium.