Take a swim at Allas Sea Pool right in front of the Presidential Palace, whether under January snow or August sun—whichever you prefer. This spa center is open year-round.

Kulttuurisauna is a modern sauna with an art gallery vibe. It features separate steam rooms (towels instead of swimsuits), a chance to dip in the cool sea, and a terrace or fireplace to relax afterward.

Löyly is another popular spot, though it's more like a city resort with multiple saunas, including a traditional smoke sauna. There's a lounge area, a sea-facing patio, and a restaurant with slightly ...

A lesser-known Helsinki attraction: Sheep Island. While the sheep that gave the island its name are long gone, nature lovers can explore wooden trails cutting through a scenic marsh. Here, you can get...