Tesseractum is a research archive documenting anomalous and frontier phenomena in the South Florida region.

The site collects primary sources — declassified records, case files, FOIA releases, experiencer accounts, field reports — and tries to keep careful track of where everything comes from. South Florida has an unusual concentration of reported phenomena, and most of it hasn't been looked at rigorously or in one place. That's the gap this is trying to fill.

The inquiry is ongoing. The archive is open.