Interstate-Spanning McDonalds, Oklahoma

What has been called the largest McDonalds in the world spans an interstate highway in Oklahoma known as the Will Rogers Turnpike. The first restaurant to operate inside the building was the Glass House, an early chain specializing in highway travel plazas. A Howard Johnson’s also operated there for a while. McDonald’s has been the primary tenant occupying the 29,000 square foot space for a few decades, though it shares the space with other tenants, thus possibly disqualifying it from the “largest McDonald’s” claim. A McDonald's in Orlando, Florida is said to have 25,000 square feet.