The 500 Hidden Secrets of Madrid reveals 500 off-the-beaten-track places and interesting details for anyone who’s keen to explore the city’s best-kept secrets, e.g.

• The 5 favourite osterie to eat among locals
• 5 places to see fascist-era architecture
• 5 ancient games to discover
• 5 hidden sundials or meridians
• The 5 most charming artists’ houses
• … and much more