Exceptions are airport *buildings*, Federal buildings, any building with a metal detector at all entrances, courthouses, prisons, jails, police stations, and schools/colleges (without authorization).
Everywhere else, you're legal. Private property can post signs prohibiting CC on their premises, but you're only obligated to leave if they ask you to vacate the premises.
For clarification that involves concealed carry. You can and I often do open carry in many places in the State. Some cops get excited but it is legal. KG9 I walked into the store in Empire during Burning-man with a 1911 on my hip covered in antelope blood, I wish I had video off all of those drug infested burners looks. A couple of them took exception to the dead antelope on the top of my Tahoe and the Washoe County Sheriff’s just laughed at them and came over to admire the horns. BTW I would not recommend it in Vegas or Reno unless you have a lot of time on your hands. They will hook you up and run checks on you and then release you if you are clean, that could take hours.