This is a recent commissioned piece I just finished. The main theme for this piece is the highest mountains and the tallest buildings in the world. You can check out the Handy Dandy reference guide below to see which buildings and mountains are used.
This piece was lots of fun to do, because the client is a big fan of my artwork and has several of my pieces in his house. I incorporated several characteristics of the client into the piece, that if you view it long enough you can find them hidden throughout.