Sort of!! Out front of Union Station there is a van at the corner of Wynkoop & 17th St, that will hold your luggage. I know it sounds odd but it’s totally legit and it lets you walk around (if you have time to kill) without your bag. Sorry I didn’t catch the name on the van (something like Luggage Locker?) This was a Thursday morning when I noticed it, so I’m assuming they are there during normal hours?
Lockers Denver Co 80210