Vappu (Walpurgis Night), April 30-May 1

Originally a North European pagan carnival, now mostly an excuse for students in brightly colored overalls to party. At 6 PM on April 30, the statue of Havis Amanda at the Market Square is crowned with a student's cap and the revelry begins on the streets, with a party in every bar and club, and Vappu lunches in restaurants. The next morning, those who can head for the Kaivopuisto park to drink champagne and picnic. The political May Day is celebrated on the same day.

Helsinki-päivä (Helsinki Day), June 12

The birthday of the city traditionally starts with the mayor's morning coffee and is celebrated through out the day with a variety of concerts, performances, exhibitions and guided tours around the city.

Juhannus (Midsummer Festival), Friday between June 19 and June 25

A large bonfire is lit in Seurasaari. The city quiets down a bit as it is a tradition to celebrate "the nightless night" at summer cottages in the countryside.

Taiteiden Yö (Night of the Arts), near the end of August

Called "little vappu" by many as streets are full of revelers, but the official content is performing arts through the night. Founded by bookstores in the 1990s, the night is nowadays organized by the city itself.

Joulu (Christmas), throughout December

Aleksanterinkatu is festively lit up and the Esplanadi hosts an open-air Christmas market.