This is the Las Vegas Nevada Temple of the Church of Jesus Christ of Latter-day Saints (Mormons).
Set next to the mountains on a hill in the valley, you can see the temple lit up at night. It's gorgeous.
This full-sized temple is where LDS people are married, perform special ordinances for their ancestors and come to simply meditate and worship to get away from the noise of the world.
The temple is absolutely gorgeous, inside and out.
There is a building nearby for clothing.
One must be a member of the church in order to participate in the activities at the temple, but everyone is welcome to visit the grounds and learn more at mormons.org.
For one of the best views of the city, come up here.