#18 An uninhabited island
Antonio Inoki vs. Masa Saito in 1987 on Ganryujima Island in Japan, the location of a legendary samurai duel between Miyamoto Musashi and Sasaki Kojiro, certainly belongs on this list.
Imagine having so much heat towards someone, that you challenge them to a two-hour Island Death Match where you fight across a land mass like two anime characters? Rumor has it that the WWF planned something similar to this in the mid-90s involving the Undertaker and Mankind on the San Francisco prison island Alcatraz.
Hiroshe Hase vs. Tiger Jeet Singh later tried to recapture the magic with a bizarre feud leading to this even more bizarre match; both opponents looked like psychopaths rolling around in the grass with open wounds while the extremely quiet crowd was barely noticeable, the announcers were highly monotone and the ring was almost completely ignored.