
This is a remarkable brass or bronze design of serpents on the side of the Masonic Temple designed by John Russell Pope on Sixteenth Street.
It's a remarkably intricate bit of design work that extends to the inside of the building. This is on the second floor and the design is repeated inside on the walls of the main ceremonial temple room.
I was surprised to find out they conduct regular free tours of the building. Pope also designed the Jefferson Memorial and the West Wing of the National Gallery of Art.
The temple also features two giant sphinxes that is featured in close up on the banner of this website.