Baixa-Chiado (Lisbon Metro)

Baixa-Chiado is an interchange station where the Blue and Green Lines of the Lisbon Metro connect, being located under Rua Ivens between Baixa and Chiado, hence its name. 
History.
The station opened on April 25, 1998 with service on the Green Line; the Blue Line platforms opened on August 8, 1998. It was designed by the Pritzker architect Álvaro Siza Vieira.