Create a Gallery using Google Sites
Google Sites does not currently offer a built-in tool to make galleries. So you have the following alternatives:
- Insert a table (Table > Insert Table) adding a photo to each cell
- Upload your images to their own album in Picasa then Insert > Picasa Web Slideshow.
- Follow these instructions to show a Flickr slideshow
- Embed a Google Docs Presentation using Insert > Presentation
See the results at Gallery Demo on Google Sites.