The exterior of the factory.
The interior of the factory in early stages.
Willy Wonka's Chocolate Factory is a setting re-created by the MrBeast team and is based on the fictional factory of the same name. It is where the challenge I Built Willy Wonka's Chocolate Factory! took place. This factory is presumably in North Carolina, since this is the state where the MrBeast warehouse is located.
Some of the key differences here is the fact that there are several rooms which are used for challenges, though the main room intended to look similar to the main room of the factory from the original movie. There is a chocolate river, as well as a chocolate door.
This factory was under construction for around six months before the challenge actually took place (around 2-3 weeks before the video was uploaded).
All of the contestants who were in the challenge were admitted to the factory in the first place because they found a ticket in a Feastables chocolate bar that they have bought from before.
At the end of the challenge, the factory was owned by the MrBeast team, until it was given away to the blonde guy wearing blue for as a prize for winning all of the challenges. However, due to maintenance problems, such as the deteriorating chocolate river, deteriorating candies, along with their costs, it would be difficult to maintain the factory, so the ownership of the factory was given back to the MrBeast team, but the winning contestant received $500,000 in return.