Nautilus Elementary lacked the nice breadcrumb layout when on the default Ambiance theme, so here is a simple fix to bring it to you.
The installation is extremely easy, simply run the following commands in a terminal:
cd ~ #this should take you to your home folder wget http://gnaag.k2city.eu/nautilus-breadcrumbs-hack.tar.gz tar -xvf nautilus-breadcrumbs-hack.tar.gz
Alternatively you can also manually download it and extract the contents to your home folder (make sure you copy the contents of the nautilus-breadcrumbs-hack folder directly into your home folder!).
Then set Nautilus Elementary to use Breadcrumbs by going to Edit > Preferences, on the Tweaks tab enable “Show like breadcrumbs”:
Finally, you may need to restart Nautilus: