This Secret City Trail across Barcelona’s Old City is a playful and immersive adventure where you can experience the city in a different way. You will solve 11 cryptic clues via a web app, simply using your unique link (which you receive via text message after payment) in your smartphone’s browser. The clues range in difficulty from easy to medium – they're set up to help you have fun, not keep you trying to solve something impossible for ages. As you follow the trail, you discover the secrets of the Barri Gòtic, seeing well-known sights from a different point of view and being guided to lesser-known spots. The trail starts in front of the fountain on Plaça Reial, and as it is self-guided using the app, you and your group can begin anytime between 10am and 5pm any day of the week except Monday (it's recommended you don't start too late, as some of the venues may close before you finish). You'll finish approximately one to two and a half hours later (though there is no time limit) near Plaça Comercial, having explored approximately two kilometres. The app and all clues and instructions are in English.