(Photo: Município do Porto, CC BY-NC-SA – Some Rights Reserved)
When: June, from 23rd to 24th
Time: from 8:00 pm until dawn

Where:  downtown and Ribeira

“The São João festivities in Porto already stand as a landmark for life in the city and are experienced by more and more tourists and visitors each year, taking part in the initiatives occurring all over the city. (…) The city gets dressed up and the streets are filled with colour and scents, joy and high spirits.”

More info: http://www.portoturismo.pt/Visitar/Paginas/Artigo.aspx?artigo=8#.UZ5RV65jU7l