La Casa Batlló needs little introduction. Its sinuous and surreal art nouveau façade is one of the highlights of any trip to Barcelona. Designed by Antoni Gaudí for the wealthy Batlló family between 1905 and 1907 and is located on Passeig de Gràcia. No surprise that it is a Unesco world heritage site. This spring the Casa Batlló is revealing some exciting new multimedia additions to the visit. La Casa Batlló has developed a series of augmented reality and virtual 3D environments to the ...