Me gusta saber que hay museos gratuitos para que todos puedan disfrutarlos.
antes llamado Museo de Escultura al Aire Libre de la Castellana, que alberga diecisiete esculturas abstractas de autores españoles, bajo el puente Enrique de la Mata Gorostizaga, que une la calle de Juan Bravocon la de Eduardo Dato sobre el paseo de la Castellana, entre los distritos madrileños de Chamberí y Salamanca.
Well I wouldn't call this museum. It's just a place under bridge where you can see a few sculptures. Some of them are nice, some of them are not... worth a quick stop anyways. I appreciated there is a small pool, after walking all day long it was a pleasure to put my feet in and relax :-)
Free entrance, open every day