I would like to Align several distinct boxes so that the top of each one is at the same level. For example:
framed1 := Framed["", ImageSize -> {100, 100}]
framed2 := Framed["", ImageSize -> {250, 75}]
framed3 := Framed["", ImageSize -> {50, 50}]
Row[{framed1, framed2, framed3}, " "]
Ideally, all three boxes should have their top line begin at the same place as the first one, instead of being centered.