There is not much to add to the reviews about the Forth Bridge - it's one of Scotland's most recognizable landmarks, and if you are lucky on your approach to Edinburgh Airport, you can already see it from the air. Many years ago, I took a bus from Edinburgh into the highlands that used the road bridge next to the rail bridge, but I didn't want to count this drive-by as a visited site, so I took the train to North Queensferry (that actually goes across the bridge) and walked down to its northern end to take some more photos. Then I took the next train back (they are very regular) to Dalmeny to view the southern part. On the northern end, you can get basically directly under the bridge and take nice close-up pics, while from the southern end, you have nicer panoramic views. This is an interesting, but not really world-class site that makes an easy excursion from Edinburgh and could also be combined with a boat ride under the bridge.