Thermen Holiday (Schiedam)

**Thermen Holiday** brings a tropical oasis to Schiedam, with its 1,800-square-meter indoor complex featuring a 40-meter wave pool and two salt-water grottos—the most extensive artificial marine environment in any Rotterdam-area spa. The wave pool operates on a 15-minute cycle, generating waves up to 1.2 meters tall, a feature that outpaces #7 SpaPuur's still-water pool in cardiovascular engagement. Its sauna landscape includes five themed options, from Finnish dry to bio-sauna, with 95% humidity control for optimal steam distribution. A day ticket costs €55, which is 20% cheaper than the average North Sea beach spa, while providing comparable thermal services. The salt-water grottos, maintained at 28°C, reduce skin inflammation for 70% of visitors within one session.