When you think of Barcelona Spain, you usually think tapas, the running of the bulls, or toilet paper that feels a lot like paper grocery bags. Who knew that it was also home to 40,000 Hot Wheels fans?

Well, that’s how many people showed up to the BCN Fan Fest in Barcelona this year. To help celebrate the event, Hot Wheels put together the world’s longest wall track ever built. It doesn’t say how long it is exactly, but it looks like it is at least ten stories tall.