Rsync how to include directories but not files?

Question

I have a directory structure and files like this

data/
data/a.txt
data/folder/
data/folder/b.txt
data/folder/folder/
data/folder/folder/c.txt
...
         


        

Answer 1

rsync -a --include='*/' --exclude='*' source/ destination/

Basically, first include all directories, then exclude all files.