Time Out says
The former Casino Militar, located in the heart of Gran Vía, opens its doors to host the Mercadillo del Gato. From December 11 to January 5, you can check out almost a hundred different fashion designers, crafts, decor and gourmet products on the first floor of this majestic building with its great hall and modernist windows. There will also be prize draws for Christmas hampers, exhibitions, live music, photography contests and loads more activities. What's more, this market collaborates with Aldeas Infantiles, so you can also help out children in need.
Gran Vía, 13
|Transport:||Gran Vía (M: L1, L5)|
|Opening hours:||Dec 13-23 & Jan 2-5, 11am-9pm|