First of all Philly, has submitted an attractive bid for WrestleMania 33 and may receive the location rights for the show. Which would be good for them especially after losing out in 2015 and 2016 respectively. Philly is the running to host their first ever WrestleMania which would be great for them because I always like to see WrestleMania being held in new arenas and in new places. The location of WrestleMania if Philly did win the bid would be in Lincoln Field which holds almost 70,000 people for football. The NXT Takeover, Raw and Smackdown would all likely be held at the Wells Fargo Center on their respected days.
Another rumored city for the upcoming WrestleMania is Minnesota. The city was the favorite for WrestleMania 32 but was beaten out by Orlando. Recently the NFL team the Vikings received a new stadium and that would be an attractive location for the event as well. The NXT Takeover event, Raw, and Smackdown would all likely air from the Target Center if this comes to be.
Keep in mind that all of these talk is just among the rumors for now until at least Royal Rumble time and for now all of this is just a rumor.