A new Gaudi's milestone is going to be opened to the public from next week on: the penthouse and roof of Batllo's House. Batllo's House is the blue one just two blocks away from La Pedrera in Passeig de Gràcia. Its lobby, patio, and first floor were opened to the public for the first time in 2002, to conmemorate the 150th Anniversary of Gaudi. Now, the Batllo family has decided to open the upper part of the house, too. Each of the parts visit costs 10 EUR, and there's a combined ticket for both at 16 EUR. A bit expensive, but it's really worth.

An English Webpage about the House: http://www.greatbuildings.com/buildings/Casa_Batllo.html