The Lisbon Metro is a rapid transit system in Lisbon, Portugal. Opened in December 1959, it was the first rapid transit system in Portugal, and to date is the only rapid transit system in Portugal. As of 2023, the system's four lines total 44.5 kilometres (27.7 mi) of route and serve 56 stations.

Maria Helena Vieira da Silva was a Portuguese abstract painter. She was considered a leading member of the European abstract expressionism movement known as Art Informel. Her works feature complex interiors and city views using lines that explore space and perspective. She also worked in tapestry and stained glass.