A disintegrating tower, once a thriving cultural hub, now stands hollow and derelict in Monrovia, Liberia; experts investigate and uncover a landmark skyscraper left to decay in the wake of a bloody political coup.

A curiously designed, windowless building adorned with gold-tinted diamond shapes now stands derelict in Tulsa; experts investigate and uncover a controversial religious figure and the headquarters behind a pioneering form of American TV evangelism.