By default, Awesome Gallery just shows a simple caption on hover (but it can be always visible):
Off-hover mode and centered
You can also show captions by default and hide them on hover. And, in this demo I configured captions to show at the center of the image instead of the bottom part
And even more
You can create your own caption styles by using a configuration panel and combining caption options with overlay options. And if you want to go hardcore – you can customise captions with custom CSS properties!