Where was the Blair Witch franchise filmed?

The Blair Witch franchise has 3 titles (1999 to 2016). Wikidata records no filming place for them; Wikipedia names New York City, Vancouver, Baltimore, Rockville, Montgomery County and 12 more places. Every place links to its source.

The productions, in order

Named in Wikipedia's own articles

Places named only in the titles’ Wikipedia articles.

9 of 17