SAUNA HOUSE is The Saltwater Sauna's flagship on Boscombe beach, which it calls the UK's largest beachfront sauna. One indoor two-tier sauna built by Finnmark seats 35 and looks out to sea. Between rounds guests use hot and cold showers, a cold bucket shower or the sea, then a tea lounge. Sessions last 90 minutes, from open communal and silent sessions to guided rituals with leaf whisking and salt inhalations, from £27.50. Open all year; swimwear is required.