Now you can find things to do on Airbnb, not just places to stay. Led by local experts, these experiences can take you beneath a city’s surface. Here in Barcelona, you can cruise past all the restaurants advertising authentic paella and join cooking teacher Sara in her family’s hidden garden for a master class on the real thing. Following her grandmother’s recipe, you’ll use fresh ingredients to prepare slow-cooked sofrito and stock—just two of the factors that distinguish true paella from the pretenders. As the flavors gradually deepen, you’ll learn more about the dish over tapas and wine. Once you’ve savored the masterpiece you’ve helped create, and maybe downed an espresso or two, Sara can point you to the best spots to dance it off.