This Psalm opens up with a familiar phrase, "O Lord, our Lord, how majestic is your name in all the earth!" (ESV)
This Psalm paints a picture of ways that God reveals Himself and His glory. I've heard people feel closest to God and experience His majesty when they're in the mountains, or at the beach, or when they witness the birth of their child. This past summer I visited Yosemite for the first time and remember entering Yosemite Valley and just being overwhelmed by the beauty and majesty of the view.
Where/when do you sense God's majesty?