"My friends and I were celebrating the Finnish midsummer festival called Juhannes, where the sun doesn't go below the horizon and we enjoy the light of the nightless night. We were spending time having a barbecue and drinking beer and wine, but the highlight of the day was the sauna followed by a dip in the lake."
Go: Lahti sits on Lake Vesijärvi, just an hour north of Helsinki. The best time to go is in June, when the days are the longest and the water is warm.
Stay: Set up base in Helsinki, but spend the week couch surfing with locals in Lahti. If you;re looking for privacy, the Mukula Campground is an hour's walk away and offers summer cabins and a sauna.
Eat: Skip the restaurant and prepare your meals with a local epicure; perhaps your couch host can assist. The fish is tasty, but the real treat is exotic game like reindeer.
Drink: Sahti is a traditional beer and pontikka is a home-made vodka of the region. Joona says "just make sure your distiller is an old master of his art. It's important if you wish to keep your eyesight."