Steam Engine Building (Mosque)

The “Mosque” of Potsdam

The Steam Engine Building (Dampfmaschinenhaus), located on a bay of the Havel River called the Neustädter Havelbucht, is at once the most charming and one of the most exotic buildings in Potsdam. It is also a remarkable architectural example of a functional industrial building from the early 19th century. Frederick William IV, the “Romantic on the throne,” had Ludwig Persius construct Prussia’s most beautiful power plant from 1841–43, resulting in the only pump station created in a Moorish style. The building, which at that time could still be seen from Sanssouci Palace, set a picturesque and architectural accent in Potsdam’s cultural landscape.

In October 1842 the steam engine in the “Mosque” (capable of 81.4 hp) went into operation for the first time, sending a jet of water in the Great Fountain in front of Sanssouci Palace soaring to an impressive height of 38 meters. August Borsig, who was still a young entrepreneur, had built for Prussia the most powerful machine of its time, allowing King Frederick William IV to compete with the technical supremacy of England.

Although water supply to the fountains in Sanssouci Park is now carried out by modern electric pumps, visitors to the “Mosque” can marvel at technical ingenuity of the past that is still in use – a fascination shared by young and old alike.


Steam Engine Building (Mosque) [Dampfmaschinenhaus (Moschee)]
Breite Straße 28
14467 Potsdam

How to get there

Public Transportation

Stop "Potsdam, Feuerbachstr."

vbb-online | Timetable information »

Opening Hours

May to October

open every first Sunday of the month
10:00 - 17:30

additional holiday openings:
1 May - May Day
18 May - Ascension Day
28 May - Whitsunday
29 May - Whit Monday
2 October - Bridge Day
3 October - Day of German Unity
31 October - Reformation Day

half hourly guided tours
Lunch break 12:30 - 13:00
Last admission 30 minutes before closing

Overview of opening hours and holidays »

Admission Prices

Single Ticket

Tickets are only available on site at the register.

incl. guided tour

Price : 4.00 reduced : 3.00

Tickets are only available on site at the ticket office.

Information on free admission and concessions


SPSG | Visitor's Information
Visitor's Center at the Historic Windmill in Sanssouci Park
An der Orangerie 1
14469 Potsdam
(Closed Mondays)

Visitor's Center at the New Palace in Sanssouci Park
Am Neuen Palais 3
14469 Potsdam
(Closed Tuedays)
Phone: +49 (0) 331.96 94-200
SPSG | Gruppenservice
contact form for booking requests
Phone: 0331.96 94-222
Fax: 0331.96 94-107


  • not wheelchair accessible

Unfortunately, the exhibition rooms are not accessible for wheelchair users.

For conservation reasons, it is unfortunately not possible to use prams / baby strollers in the exhibition rooms.

Luggage storage

Please note: No luggage or baggage may be left in the entrance area of the palace for security and safety reasons.
Unfortunately, there are no facilities for storing larger pieces of luggage or similar baggage on the premises of this historical site. We appreciate your understanding.


360 degree panorama