This is the place to go for tapas in Las Vegas. Not only is it inside Aria which gets you to City Center, but it's done by chef Julian Serrano and is cearly one of the best restaurants in Las Vegas. Make this a destination. I have been a number of times and always love the Tortilla Espanola (which is my own measure of a great Barcelona style tapa wherever I go for tapas). Julian Serrano's does not disappoint, but they have changed the recipe recently and its lost something (different olive oil or less egg?). Same story with the Pan Catalan which is now on a tiny split baguette - clever, but it's less authentic. The choices are many traditional Spanish tapas and a number of newer tapas. You can't go wrong, but absolutely leave space for the churros con chocolate!