Often called the Festival of Sardines, Santo António is Lisbon’s longest night of the year, bringing together visitors from all walks of life. See colourful floats representing the different historic neighbourhoods of the city course through the streets and enjoy grilled fish and meat, music and dancing. Hosted in June, this festival is well worth planning your hen do around, even if you don’t like sardines, and comes as part of a much larger, month-long celebration.