The UnXplained With William Shatner: Season 1 Episode 16

Secrets Of America's Monuments

America's monuments are inarguably impressive due to their colossal size and scope, their ground-breaking feats of engineering, and their storied histories. Why is it that America's greatest monuments continue to enthral us decades - and sometimes centuries - after their creation? And perhaps more importantly, what closely guarded secrets may their implacable facades be hiding?