Madrid, Spain Top 12 + Bonus: Smart City Guide from Gran Vía to Retiro Cuatro Torres Business Area Gran Vía Madrid travel guide Madrid walking tour Metro de Madrid tips Plaza Mayor Prado Museum Puerta del Sol Retiro Park Royal Palace Madrid +
Warsaw Castle Square (Plac Zamkowy) — Day to Night Walk Around the Royal Castle Castle Square City Walk Night Walk Old Town Plac Zamkowy Poland Royal Castle travel Walking Tour Warsaw +