As for the Empire State Building shot, this is a personal favorite. I wanted a picture of the building that eliminated the ground clutter and busy hustle-bustle of cars, pedestrians, etc. So I found a concrete planter on the sidewalk that had these violets growing in it. I thought it would be a great and pleasant way to block out the foreground, so I laid down on my stomach on the sidewalk and shot upward from a few inches above the pavement, through the violets, upward to the Empire State Building in the distance. I had to shoot from a very, very low angle to get this view. Imagine being sprawled out on a busy New York sidewalk with people rushing to and fro. I also got into the right position so that there was one flower pointing to the left, one in the middle, and one on the right, and the building seems to rise from the plant like another blossom. And it nicely blocked out the crazy busyness of the place and made the scene rather serene and quiet in the photo
Leo, this is my favorite too! Though it's so hard to choose. Like everyone else has been saying, it must be said again that you have such an eye for composition and these photos look National Geographic quality to me! Thanks for sharing!