Tilt down shot of Saint Francis Church with bell tower and white facade, Porto

establishing porto portugal architecture attraction building center church city cityscape tilt down shot bell tower white facade unesco world heritage landmark historical site religious christianity porto cityscape cultural heritage tourist attraction travel destination sacred place religious building historic church spiritual exterior church facade unesco site heritage preservation architectural beauty old town city landmark gothic style porto tourism cultural significance st francis of assisi religious history faith visitor destination historic preservation spiritual retreat serenity heritage site porto skyline saint francis church gothic monument urban