For every Edinburgh architectural proposal that gets the green light, you can bet there are at least twice as many that end up scrapped.
From a motorway encircling the city centre and a lido in Princes Street Gardens, to an opera house facing the castle and a film theatre dedicated to Sean Connery, the capital has seen scores of grand plans fall by the wayside over the years.
We take a look at seven ambitious Edinburgh proposals that made it to the drawing board and remained there.