Quick answer
What is the best Green Porto route?
The most beautiful central green route combines Jardim João Chagas, also known as Cordoaria, Parque das Virtudes and the Jardins do Palácio de Cristal. It is compact, scenic, historic and easy to do on foot.
For a full day, start at the Jardim Botânico, continue to Serralves, then finish at Passeio Alegre and Foz. This gives you the most elegant version of Green Porto: botanical memory, art, architecture, old gardens, river atmosphere and the Atlantic.
If you want something less obvious, go east: Parque das Águas, Parque de São Roque, Quinta de Bonjóia and Parque Oriental show a quieter Porto that many visitors never reach. If you want a coastal extension, continue into Gaia through beaches, dunes, parks and Miramar.