Art in Cobblestones One of the endearing hallmarks of Portugal's streets is their decorated pavements. Limestone is hewn into tiny blocks creating beautiful patterned compositions, traditional and modern designs, street numbers, and business logos. Rossio Square Chiado Avenida da Liberdade Other designs show armillary spheres, caravels and vessels, crosses, stars, and animals. It all started in 1849 after the completion of the wave design known as "the wide sea" in Lisbon's Rossio Square . By the end of that year, the pavements of the Chiado district and Avenida da Liberdade were also completed. Eventually most of Lisbon's streets were paved this way, and it spread throughout the country. These pavement designs are also seen in Portugal's former colonies, with the "wide sea" design seen in Rio de Janeiro's famous beaches, and even in one of Macau's main squares. Rio Janeiro - Calçadão Copacabana ergonofacts.bl...