I use PHP, HTML, CSS, JQuery and PrettyPhoto in this photo gallery. Google Map API 3.0 is also used to enable showing where the photos were taken on a map. Picture information can be added by uploader, and they are stored in text files, so no need for SQL database.
Feel free to download this photo Gallery and try it out :)
If you have any suggestion or question, drop me an eamil to xlacglzh AT hotmail.com (delete the x)