YouTube star Jimmy Donaldson, known as "MrBeast" just opened his first-ever theme park, “Beast Land." The park brings his over-the-top challenge videos, massive giveaways, and outrageous stunts into real life. The park is open till December 27th as part of this year’s "Riyadh Season" in Saudi Arabia. CNN's @bijanhosseini reports. #mrbeast #beastland