I've been to Vegas maybe more times than most SoCal visitors and it never surprises me to find something new about Vegas each time. The hidden discovery from my March trip was the CityCenter tram! Not wanting to quite leave yet on the last day of the trip, we were taking our time walking around Crystals. After walking all around we ventured to an obscure corner of Crystals (south side I think) and noticed some escalators. Bam, we found the tram. It's free? Oooooh, even better!
The mid-point location of the tram is at Crystals. If you're at this station, you can choose to go to Bellagio in one direction or Monte Carlo in the other. Convenient and nice way to stay off your feet! It comes every 5ish minutes, so your wait will not be long. Keep an eye on the signs above to determine which direction the incoming tram is going. In case you really planned to go to Bellagio, you don't want to accidentally board the tram that's heading towards Monte Carlo.
Too bad it doesn't go further beyond Monte Carlo or Bellagio, but I'm thankful this tram is even here!