At the turn of the year, the BOILER will be open continuously from December 31, 2025 at 12:00 a.m. to January 2, 2026 at 6:00 a.m.
From 5 p.m. to 9 p.m., our staff invite you to enjoy fantastic infusions in our 90° sauna.
Please note that there may be waiting times at the entrance on these days!

Get one of 100 exclusive time slot tickets for the first BOILER docking event of the new year on New Year’s Day.
We are combining the BOILER with our new CLUBSAUNA in the former Club UNTERTAGE. There you will find changing rooms, a bar, cruising and wellness area as well as the transition to the complete BOILER offer.

This ticket gives you exclusive access to the CLUBSAUNA.BERLIN (formerly UNTERTAGE Club, entrance Mehringdamm 32, Metropol-Hostel) during the specified period with a significantly shorter waiting time.
The ticket is only valid for the admission time selected when purchasing the ticket and loses its validity after this time slot. The admission price includes a stay of 6 hours. CLUBSAUNA will close at 6:00 a.m. on friday morning.

At the first weekend of the year, the BOILER will be open continuously to January 5th, 2026 at 6:00 a.m.
From 5 p.m. to 9 p.m., our staff invite you to enjoy fantastic infusions in our 90° sauna.
Please note that there may be waiting times at the entrance on these days!

Get one of 100 exclusive time slot tickets for the first BOILER docking event of the new year on this special SUNDAY.
We are combining the BOILER with our new CLUBSAUNA. There you will find changing rooms, a bar, cruising and wellness area as well as the transition to the complete BOILER offer.

This ticket gives you exclusive access to the CLUBSAUNA.BERLIN (formerly UNTERTAGE Club, entrance Mehringdamm 32, Metropol-Hostel) during the specified period with a significantly shorter waiting time.
The ticket is only valid for the admission time selected when purchasing the ticket and loses its validity after this time slot. The admission price includes a stay of 6 hours.