Sunsets are one of my absolute favorite sights in nature. Sunrises sre equally amazing, but I'm always driving and can't grab pictures of it. Sunsets remind me to reflect, take joy, and praise Him for the wonders that surround me every day.
And of course, Psalms has some perfect verses to go with it.
Psalm 113:2 NIV "from the rising of the sun to the place where it sets, the name of The Lord is to be praised.
Psalm 65:8 NIV "the whole earth is filled with awe at your wonders; where morning dawns, where evening fades, you call forth songs of joy."