The Photos can be framed with different styles of frames and their Thumbnails (see below - click on Thumbnails to see the Photos full size) could be organized in columns with a maximum number of Thumbnails per page. The spacing between Thumbnails is adjustable.  A caption of 1 or 2 lines can be added to each Photo. The Photos can be downloaded in small, medium, large or original size.

The Slideshow can be presented with different transitions and can show or not reflection and caption.