This windowless NYC skyscraper is reportedly an NSA spy hub

33 Thomas Street — Marcin Wichary from San Francisco, U.S.A. / CC BY 2.0 (via Wikipedia)

33 Thomas Street, a “550-foot-tall (170 m) windowless skyscraper” in Tribeca, has no windows at all — its walls are “entirely covered with precast concrete panels clad with flame-treated textured Swedish granite,” according to Wikipedia. One observer claims it “featu…