Images in a Google Drawing
Example of images with captions inserted in a Google Drawing.
It would be nice if it were possible to insert an entire album automatically
Embed Google drawing
There is a border when you insert from Google Drive, however, there is no border when using an embed code. The only downside is that the links don't work when embedding.
From this Community post: https://support.google.com/sites/thread/143799519?msgid=143827595
See example below: