Big Square is a fantastic free photo design from WordPress theme developers WordsPop.
The design puts emphasis on photos using an excerpt to display the first image and previews for the rest of the set. It has a minimal design with a nice drop down navigation menu in the header.
It’s WordPress 3.0+ ready too so will work with the new custom menus and backgrounds.
If you post a large number of images, I recommend trying Big Square out. Please visit the links below for more information :)
Big Square: Information & Download | Demo