The temples are underground and organized into 9 chambers with stunning murals, mosaics, statues, secret doors and stained glass windows. They occupy over 300,000 cubic feet and were built secretly by a team of volunteers over a 16 year period.
Here's the Hall of Mirrors:
Here's the Labyrinth:
Here's the Hall of the Earth:
I'm hoping to visit the site over Christmas if visitors are allowed. If I go, I hope to also create some educational materials based on my trip to share with other users of my education site edu2.0.