Beautiful two-story colonial town houses line this narrow cobblestone street leading off Praça XV (Quinze) de Novembro. The archway, called Arco de Teles , leading into the area was once part of an old viaduct running between two buildings. Today, Travessa do Comércio contains half-a-dozen restaurants and drinking spots that open onto the streets. It's a favorite spot for cariocas after work.