This is a worthwhile stop on your trip to Las Vegas. The Casino bosses wanted a place for their workers to attend Mass on Sundays, as they were perennially late on those days due to having to travel to local Boulder City to worship on the Holy Day. So, this church was built, starting around 1959, and finished in 1963. For Las Vegas, that is basically ancient history. The architecture and artwork are impressive, even if not to everyone's taste. A Hungarian woman artist did the mosaic murals, and each has special significance to people of faith (you may have to study it to find out).
The church itself is now a Cathedral, so the Bishop presides over it, and it is not a parish church. The Tribunal for the Diocese is right behind it, too. But they have daily masses, confessions, and other spiritual events. You don't have to be a believer or Catholic to visit, however. You can wander in and look around whenever it is open, and take photos. (No one will mind unless it is during a service). Go to the bookstore near the entrance, which has a decent little collection of tchotchkes and religious items. (It is usually staffed by sourpusses, but don't let that bother you). You can "light" an electric candle by one of the two side altars. The bathrooms off to the left of the church are clean and serviceable.
They also have a Vigil Mass of as early as 2:30pm on Saturday, way before sundown, to accommodate tourists. If you go on holidays, or some Sunday masses, there is an amazing live musical accompaniment that will be better than most musical acts on the Strip...for free! Not to mention the presence of God here.
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