Starting at Praça dos Restauradores, by the Blue Liberdade Hotel, you'll open the Explorial app, enter the 6-digit game code that you received by text and Viator chat message, and follow the mosaic pavements south. The tour is fully self-guided — no guide, no fixed start time, just your group and the city. The obelisk of the Restauradores opens the story — independence regained from Spain in 1640, celebrated in stone. Riddles brush up your Portuguese history fast. The Elevador de Santa Justa rises ahead, a cathedral of rivets by a disciple of Eiffel, still lifting passengers between Baixa and Chiado. Trivia queues jump for free. Then the Arco da Rua Augusta crowns the grid, opening onto Praça do Comércio and the wide Tagus beyond. Around two hours through the earthquake-born grid of 1755. The leaderboard posts results — celebrate with a ginjinha, as tradition demands.