Tomorrow morning Cassini dives into Saturn and burns up to avoid contaminating any of the moons. NASATV is running many programs about the mission and will broadcast the end of mission tomorrow beginning around 6 or 7 AM EDT. Here is a picture of Cassini-Huygens as a brand new machine before launch so many years ago.
NASA has released some numbers about the mission:
4.9 billion miles traveled, 294 orbits of Saturn completed, 2.5 million commands executed, 635 gigabytes of science data collected, 453,048 images taken, 3,948 science papers published, 27 nations participating and two oceans discovered. At a cost of $2.5 billion to build and launch Cassini and Huygens, split between NASA, E.S.A. and the Italian Space Agency, and another $1.4 billion to run them for 20 years in flight, that seems money well spent.
The NY Times has composed a magnificent set of pictures illustrating the mission: https://www.nytimes.com/interactive/2017/09/14/science/cassini-saturn-images.html?hpw&rref=science&action. Make sure to watch the video at the end. Wow! Thank you again Cassini and NASA.