Madrid emerges from several years under wraps to reveal its new facelift. Streets have been prettified, boulevards swept through and transport untangled. This in addition to its perennial attractions, whether your interests lie in spectacular opera productions or chirpy folkloric zarzuela; in cutting-edge cuisine or ancient, tiled tabernas; and, in designer-shoe shopping or mooching around flea markets. Put together by journalists resident in the city, ''Time Out Madrid'' also covers the artistic jewels housed in the Prado, Thyssen and Reina Sofia, as well as the etiquette of watching a bullfight or joining in with a flamenco performance, plus where to stay and how to escape the city heat.