Detroit's Pontiac Silverdome
How could this not make the list? Obviously, this event was held at a time when WrestleMania was a single day event versus a full week festival. WWE would return to Detroit years later with the 23rd edition of the show, held at new Ford Field.
However, the crowd drawn at WrestleMania III in 1987 makes the venue too iconic to be ignored. This was maybe the most spectacular venue in wrestling history despite no real "set," per say. Though the memorable ring carts that brought the wrestlers to the ring was a memorable touch. Anyone who grew up in the 1980s rented the Coliseum Video of this show over and over again to marvel at the size of the crowd and the venue as much as to watch the matches.
While there will be other venues on this list with sets that are a whole lot more fancy than what we saw at WrestleMania III, this one stands the test of time as a simple yet spectacular viewing experience. Truly the first of its kind.