What should I avoid in Helsinki?

Start with Helsinki Airport, because the first mistake happens there. Finnish taxi fares were deregulated in 2018, so every company at the rank sets its own price, and a ride to the centre will commonly run €40 to €55. At the 12 October rate, €45 is about 50 US dollars. The I and P trains leave from the station under the terminal and get you downtown for roughly a tenth of that fare. Buy the ABC zone ticket in the HSL app or at a platform machine before you board. Nobody sells tickets on the train, and HSL inspectors tend to charge a penalty fare of around €100. If you do need a cab after a late flight into Helsinki, read the price sticker on the rear window first: it lists the starting fee and the per-kilometre rate, and the cheapest car at Terminal 2 is not always the one at the front of the queue.

Kauppatori, the Market Square beside the Havis Amanda fountain, is where most first-timers overpay for lunch. The orange tents sell salmon soup and fried vendace at around €15 a plate, the wind off the South Harbour cools it in minutes, and the gulls there will take a fish off your paper tray mid-bite. Walk 100 metres south to the Old Market Hall, Vanha Kauppahalli, which has traded since 1889: it is warm inside, it smells of smoked fish and dark rye, and the creamy lohikeitto arrives hot in a proper bowl with butter and bread. Mind you, the bigger saving in Helsinki is timing. Most restaurants run a weekday lounas between roughly 11am and 2pm for €12 to €15, and the same kitchen might charge €30 for a main at 7pm. Eat your large meal at midday, as the office workers in Kamppi do. The reindeer tasting plates sold around Senate Square tend to cost more than a full dinner in Kallio.

Two paid extras in Helsinki are not worth the money. The hop-on hop-off buses charge around €35 for a loop that tram 2 largely covers, running from the railway station past Kauppatori and on toward Temppeliaukio Church, and an HSL day ticket for zones AB costs about €10. The private sightseeing boats on the harbour quay sell Suomenlinna trips at a markup, while the HSL ferry from the east end of the square takes 15 minutes and accepts that same day ticket. Bring a windproof layer for Suomenlinna: Helsinki sat at 8.4°C on the afternoon of 13 October and felt like 6.3°C, and the open ramparts at Kustaanmiekka are colder again. Temppeliaukio Church is worth seeing, but not at midday, when cruise-ship coaches tend to arrive between 11am and 2pm, the rock walls echo with tour-guide microphones, and the church sometimes closes for services and concerts at short notice. Go at opening or in the last hour, when you can hear water drip down Temppeliaukio's granite after rain. Senate Square and the steps of Helsinki Cathedral need 20 minutes, not a morning.

Helsinki is low on street scams and scores 8.5/10 for solo-traveler safety (see the TTDI Solo-Safety Index), but the real hazards here are duller. Wine and spirits above 8% are stocked at the state Alko shops, which generally close at 9pm on weekdays, 6pm on Saturdays, and all day Sunday, so a hotel-room bottle needs planning. A bar pint in Punavuori tends to cost €8 to €10. The area around Kaisaniemi Park and the east side of the railway station gets loud and drunk after midnight on Fridays and Saturdays, and it is the one central stretch worth walking around. From December to March, watch for the barriers and warning signs on pavements in Kruununhaka and Ullanlinna: they mark roofs where ice and snow are about to slide off, and the granite underfoot is often glazed. Last, don't book the two-hour ferry to Tallinn for your first full day. Jet lag and a 7:30am sailing make a poor pair, and Ateneum and Kiasma sit within a 5-minute walk of each other for a slower start.