I'm really happy with the composition on this one. It took me 6 tries to get the whole chateau and the whole reflection into one shot. There were just 1-2 pixels between the top of the tower and the end of the photo. I had to add a little bit to the top and bottom, and fill it using content aware, so it's not completely at the border.
I'm not 100% happy with other parts of this photo, as I could really do with a little more brackets, especially few brighter ones. The difference between the brightly lit chateau and the surroundings was just too much for only three shots. Maybe next time :)
In this photo the Chateau in Valtice in Czech Republic. The bottom part is the reflection in the fountain in front of it. It was turned off in the evening, so it was almost like a perfect mirror.
HDR from three shots, taken with Canon 7D with Sigma 10-20mm lens, from a tripod.