My perspective on all three bridges that cross the Firth of Forth north of Edinburgh; all of them developments of their time.
The first, the rail bridge, typical Victorian engineering; the second, it seems to me, is very 1960s; and the third (just visible byond the original road bridge) well represents suspension bridges currently being built all over the world.
This image is supplied with a substantial border with the title printed in the centre at the bottom.
Picture sizes are to the nearest inch.
Forth Bridges from South Queensferry