Forum rei sitae
Defined in 2 dictionaries — Ballentine's (1916), Black's (1891)
Ballentine's Law Dictionary
James A. Ballentine · 1916
The forum where the subject matter of the action is situated.
A Dictionary of Law
Henry Campbell Black · 1891
Thecourt where the thing in controversy is situated. The place where the subject-matter in controversy is situated, considered as a place of jurisdiction, 2 Kent, Comm. 463.