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The KTH Reactor Hall

The KTH Reactor Hall is located on the KTH Campus and was originally the site of Sweden's first nuclear reactor, the R1 research reactor. The now decommissioned and dismantled nuclear reactor still breathes research and experimentation. Today, the Reactor Hall at KTH is used as a creative meeting place and serves as a mixture of museum, cultural center, seminar room, studio and lab.

A dark room with tree people next to each other with light from behind.
The KTH Reactor Hall has hosted opera, ballet and other shows.



Main entrance: Drottning Kristinas väg 51, 114 28 Stockholm.

Upper entrance (alternative audience entrance): Malvinas väg 9, 114 28 Stockholm.


Leif Handberg, KTH.

KTH Emergency Number (open 24 hours: +46 (0)8 790 77 00

The KTH Reactor Hall - a unique venue

The KTH Reactor Hall used to house the R1 research reactor, Sweden's first nuclear reactor, which is now shut down and decommissioned.

The KTH Reactor Hall is located just over 25 metres below ground level on the KTH Campus and is accessible by lift or stairs. The KTH Reactor Hall is unique with its history  and its environment with grey concrete walls, grid patterns in the ceiling and walls and no telephone coverage. The coordinate system on the ceiling is a remnant of the radiation measurements taken before the reactor was shut down.

Concrete pit with a history

In the centre of the impressive space is an open area, a large hole in the floor in the shape of a concrete pit with railings around it, where the reactor used to be located. The history behind the pit and the space itself contributes to the special character of the Reactor Hall at KTH.

Coordinate system for measurement of radioactive radiation 

In the 1980s, measurements were made to check that no radioactive radiation remained in the KTH Reactor Hall. The results showed that the radiation was below the applicable limit values and the facility was thus cleared by the Swedish Radiation Protection Authority.

A big venue with blue ceiling with white signs and a green concrete pit.
The characteristic ceiling and the pit where the reactor used to be located: Photo: Jann Lipka
A dark venue with blue spotlights and an audience facing a stage where a person is.
The conctrete pit can be illuminted to create a special atmosphere. Photo: Blackbox

When renting the KTH Reactor Hall, the concrete pit can be covered by agreement.


Throughout the years, the KTH Reactor Hall has been used as venue for a wide range of activities and events .

Rent the KTH Reactor Hall

Companies and organisations are able to rent the KTH Reactor Hall . The venue offers a memorable environment suitable for smaller lectures, seminars, workshops and similar events.

There are currently no visitor activities in the premises. KTH refers to public activities such as Stockholm Culture Night , Open House Stockholm  or the KTH Event Calendar .

Booking request

Feel free to make a booking request and KTH will get back to you as soon as possible.

Terms and conditions

When renting the KTH Reactor Hall, there are certain terms and conditions  that apply. Make sure you read them before booking the venue.


The main entrance is located on Drottning Kristinas väg 51, The upper entrance and alternative audience entrance is on Malvinas väg 9.