In the same vein, the Washington Monument is topped with an aluminum pyramid. This material was selected because at the time of construction aluminum was still

In the same vein, the Washington Monument is topped with an aluminum pyramid. This material was selected because at the time of construction aluminum was still considered nifty and new. https://en.wikipedia.org/wiki/Washington_Monument#Aluminum_apex https://en.wikipedia.org/wiki/Washington_Monument#Aluminum_a...