Days · Helsinki
Helsinki in 3 days
Harbour and sauna on day 1, museums on day 2, Suomenlinna on the last morning with the airport train from a station you already know.
Days
3
Plan status
draft
Walking
8km
default plan, all days
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Walking weather for the week
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Forecast: Open-Meteo (CC BY 4.0), model data for this point.
Your constraints
Day 1 — Senate Square, Uspenski, Market Square lunch
leave byLeave Uspenski Cathedral by 11:55 to keep the 12:30 last seating.Leave Uspenski Cathedral by 11:55 AM to keep the 12:30 PM last seating.
30 min of buffer left.
- 09:30–09:45Walk east via Aleksanterinkatu
- 09:45–10:15Helsinki Cathedral
- 10:15–10:25Walk east along Sofiankatu and the harbour
- 10:25–10:50Uspenski Cathedral
- 10:50–10:57Walk along the harbour
- 10:57–12:30Buffer / wander near Your reserved lunch (Market Square area)
- 12:30–13:30Lunch table 12:30 (Market Square)hard
What this plan gives up
- L2Skip Hakaniemi Market Hall (optional) — protects: Lunch table 12:30 (Market Square).Skip Hakaniemi Market Hall (optional) — protects: Lunch table 12:30 PM (Market Square).
- L2Skip Allas Sea Pool (optional) — protects: Lunch table 12:30 (Market Square).Skip Allas Sea Pool (optional) — protects: Lunch table 12:30 PM (Market Square).
Switches if the ground changes
- rain Helsinki Cathedral → Café or library seat near the Central Station (AC, WC) (7′, then 15′ p90 to the anchor)
Why this route?
DFL 2.3 = PFL 2.3 + OFL 0 · walk 2.3 km (1.4 mi)1.4 mi (2 km) · steps ↑0 ↓0
P_late 0.0% (fast path: safe) · margin p90 30′ · relax L2 · yield 11.3 · option value 0.59
Deadline: last seating 12:30 → latest arrival 12:20, slack 15′
β vs α: time risk 0% → 0%; margin -42 min; -€3.
trace: generated 36 · rejected no_edge×4, fast_fail:deadline×2, p50_after_latest_arrival×19, p_late>0.15×2 · frontier 4 · seed 1978571248 · solver 0.2.0 · confidence medium
After: Book an evening sauna slot at Allas Sea Pool, Löyly or another public sauna.
Day 2 — Oodi, the Ateneum and the design district
- 10:00–10:08Walk north-west
- 10:08–11:23Oodi Central Library
- 11:23–11:33Walk via Kiasma and Mannerheimintie
- 11:33–13:38Ateneum Art Museum
- 13:38–13:45Walk to Kluuvikatu
- 13:45–14:30Fazer Café (Kluuvikatu)
- 14:30–14:45Walk south along Fredrikinkatu
- 14:45–16:20Design Museum
What this plan gives up
- L2Skip Temppeliaukio Church (optional).
Switches if the ground changes
- rain Ateneum Art Museum → Café or library seat near the Central Station (AC, WC) (4′)
Why this route?
DFL 3.6 = PFL 2.9 + OFL 0.7 · walk 2.9 km (1.8 mi)1.8 mi (3 km) · steps ↑0 ↓0
P_late 0.0% (fast path: safe) · margin p90 n/a · relax L2 · yield 23.1 · option value 0.71
trace: generated 60 · rejected no_edge×4 · frontier 6 · seed 1978571248 · solver 0.2.0 · confidence medium
After: Coffee on Bulevardi, then a tram or walk back; most restaurants stop the kitchen around 21:00–22:00.
Day 3 — Suomenlinna, airport train at 14:30
leave byLeave Suomenlinna Sea Fortress by 12:35 to keep the 14:30 boarding.Leave Suomenlinna Sea Fortress by 12:35 PM to keep the 2:30 PM boarding.
47 min of buffer left; holds while the queue at Suomenlinna Sea Fortress stays under 52 min.
- 09:00–09:38Walk to Market Square, then HSL ferry (about 15 min crossing)
- 09:38–12:13Suomenlinna Sea Fortress
- 12:13–12:53HSL ferry to Market Square, then tram or walk to Central Station
- 12:53–14:30Buffer / wander near Central Station (airport train)
- 14:30–15:30Airport train from Central Station 14:30hard
What this plan gives up
- L2Shorten Suomenlinna Sea Fortress to 150 min (minimum worthwhile visit) — protects: Airport train from Central Station 14:30.Shorten Suomenlinna Sea Fortress to 150 min (minimum worthwhile visit) — protects: Airport train from Central Station 2:30 PM.
Why this route?
DFL 4.2 = PFL 2.9 + OFL 1.3 · walk 2.9 km (1.8 mi)1.8 mi (3 km) · steps ↑0 ↓0
P_late 0.0% (100 Monte Carlo runs) · margin p90 47′ · relax L2 · yield 6.8 · option value 0
Deadline: boarding 14:30 → latest arrival 14:20, slack 63′
trace: generated 2 · rejected p50_after_latest_arrival×1 · frontier 1 · seed 1978571248 · solver 0.2.0 · confidence high
After: Helsinki-Vantaa: allow 2.5–3 h before an international departure.