© All Rights Reserved The wonderful Art Nouveau facade of the Pérola do Bolhão delicatessen on Rua Formosa in the heart of Porto.The shop was once a tea shop, hence the Cha on the sign - yes that's where the British get the expression cup of 'cha' from!Related images Douro - Near Entre-os-Rios BBVA building - Porto Pergola da Foz Clerigos Tower - Porto Igreja dos Clerigos - Porto Porto Streets