What is the fine-grained topic of the following text: Just as legendary are some of the turn-of-the-century cafés, such as "A Brasileira" and "Benard" in Chiado, "Nicola" and "Martinho da Arcada" downtown, and the baroque "Café Versailles" uptown, all ideal places to have a cup of coffee. Only return the topic.
Historic Cafés in Portugal