What is "chelas"

Estação Chelas is a station on the Red Line of the Lisbon Metro. The station is located in Marvila, at the intersection of Av. Dr. Augusto de Castro and Rua Engenheiro Rodrigues de Carvalho, close to the Instituto Superior de Engenharia de Lisboa. The project was designed by architect Ana Birth with installation art by plastic artist Jorge Martins.