>Obelisks might be spiritual antenna
I think you are right, and I would like to add more to this theory.
I also came to this hypothesis after doing some research into the 'electric universe' and vibrational/sonic healing. Obelisks and pyramids are used in crystal healing at the center of crystal/stone grids. These grids are composed of quartz crystals or other healing stones arranged in sacred geometrical patterns like the 'flower of life' or pentagons, hexagons, etc.. The grids are said to combine the vibrational energies of the crystals while the obelisk/pyramid at the center projects the combined energies around the healer. They are also said to aid in projecting thought-form vibrations out into the cosmos.
This is getting into realms of stuff that is considered absolute nonsense - which even further sparks my curiosity. The above information is from crystal healing books and a talk with the owner of my local metaphysical store, but its pretty out in the open. Seems like some Project Mockingbird strategies may be at work.
What really interests me is the use of stone monoliths and obelisks in Washington DC. If remember correctly, things like the Washington Monument and other points of interest are even arranged in geometrical patterns. Hopefully another anon can provide an info-graphic about DC aerial views. I wonder if some masonic teachings are about the building and use of pyramids and obelisks as 'spiritual antennae'.
Even weirder (and what made me post this) is the recent theories from anons on the main bread about DUMBs under Arlington. I remember reading an anon speculate that the soldiers buried there could be acting as sources of demonic energy for the elites due to the 'sacrificial' nature of their deaths.
So basically I am supposing that the Washington Monument could be acting as a 'spiritual antenna' in combination with other stone monuments and the ritual sacrifice of American soldiers to form some kind of malevolent energy generator/projector or shield or loosh antenna or God knows what.
I'm sorry I cannot make a more complete post, but I believe there is definitely more to this.