Time Out says
With more than 40 weekly tours, 365 days a year (by bus, on foot or by bicyle), this service, run by the tourist board, offers the opportunity to get up close to all aspects of the city, focussing on architecture, literature, history and individual barrios. Some tours include sights that are otherwise hard to get into. Walking tours depart from the tourist office in the Plaza Mayor and are available in Spanish, English, French, Italian, German, Portuguese, Japanese, Dutch and Russian. You're advised to book beforehand at the tourist board central office at the above address to guarantee a place.
Plaza Mayor, 27
|Transport:||Sol (M: L1, L2, L3)|
|Opening hours:||Mon-Sun 9.30am-8.30pm|