An amazing sculptural installation by Neil Dawson. I love the massive scale of this, and the impression you get looking at it that it's like a doodle on a photograph or something generated in photoshop, until you see the additional pictures and realize that it isn't. I'm also impressed that it holds up well from multiple viewing angles; at no time does it ever really look "Flat".
The Grotto. Located in Germany, this is the work of Niki de Saint Phalle.