Shrines and temples have been the place to speculate (observe) or to meditate (reflect).

The design of the underground's device is shown in the pictures below.
A halo with fire　behind.
A gem with fire.
An ornamental top of rail post.
A church in Sankt-Peterburg.

Every temple or shrine has this stone lantern in front.



(PHP研究所　古代史封印されたミステリーから)