Actually, I used the Free Transform Tool (Ctrl+T) and chose Distort (right-click to see the options). I grabbed the upper corners and dragged them inward until the lines of the BUILDINGS in the background we vertical. Then I grabbed the bottom corners and dragged them upwards because when you do this, you start off getting a TALL image - vertically stretched - so you need to correct for that as well. I could have gone a bit further, but hey, this was just play, not work.

This tends to work much better than using Perspective - which seems to work well when you have a block and you WANT to make it LOOK like it's in perspective.

Free Transform>Distort is much more flexible for really correcting camera perspectives. Some sides need more or less, top and bottoms need varied correction - the Perspective Tool is an all in one 2-sides-at-a-time depending on which corner you click and drag.

But as with ANY wide angle lens, you'll still have "stretching" as you get further from the center of the image (look at the faces - particularly the guy on the top left).

Hope this help - experiment and have fun!
-Lew ;-)