The most famous street in Lisbon is Avenida da Liberdade. It is a grand boulevard lined with historic buildings, luxury shops and picturesque gardens, making it one of the most iconic streets in the city.

The main tourist street in Lisbon is the Rua Augusta, located in the historic Baixa (downtown) district. This grand, pedestrian-only boulevard connects the monumental Praça do Comércio on the riverfront to the bustling Rossio Square. It is famously paved with Calçada Portuguesa (traditional black-and-white limestone mosaics) and is lined with outdoor cafes, international retailers, and street performers. The crowning jewel of the street is the Arco da Rua Augusta, a massive triumphal arch that visitors can climb for a panoramic view of the city and the Tagus River. While Rua Augusta is the "commercial" heart, many tourists also flock to the narrow, winding streets of Rua da Bica de Duarte Belo (famous for its yellow funicular) or Rua Garrett in the Chiado district for high-end shopping and historic bookstores. However, if you are looking for the classic Lisbon "main drag" experience where you can walk, shop, and see the scale of the 18th-century Pombaline architecture, Rua Augusta is the definitive starting point for any visitor.