The interior was designed by Louis Comfort Tiffany and his studios in New York and it is stunning. The centerpiece is an enormous stained glass window at the front of the chapel:
Along the side walls are intricate mosaic murals (each one is 8 feet tall and 32 feet long) depicting sections of the Old Testament of the Bible. The docent, a former Latin teacher, shined a light on different areas and explained their significance.
My nephew, Ethan, who visited in the spring with his gifted class, told us about the back entrance. The chapel is built on a hillside with the back a level lower so the horse-drawn carriage could deliver the coffin sight unseen. Inside the back entrance, a series of pulleys would raise the deceased up to the front of the chapel.
On a side note, even the floor in the chapel was beautiful:
Learn more about the chapel here.