I built Bitcoin Core from source by following this guide: https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md
And got it running on the command line via:
Screenshots from https://bitcoin.org/en/full-node indicate that there is a GUI.
However, the guide does not mention (at the time of writing this) how to get the GUI running.
So where do I find it? How do I run it?