Edinburgh’s Royal High School began as a seminary established in 1128 by King David I. From 1829 until 1968, the non-denominational Christian school resided in this impressive, neo-classical building designed by Thomas Hamilton. Since then, the building has been considered for many purposes including government offices, a music school and a luxury hotel. None of those proposals have come to fruition. As a result, this magnificent, Greek Revival structure remains vacant as of 2016.