The Niels Bohr Institute (NBI) is a part of the Niels Bohr Institute for Astronomy, Physics and Geophysics, University of Copenhagen, and shares premises in the city with the Nordic Institute for Theoretical Physics (Nordita), which has programs in condensed matter and astrophysics in addition to the subjects listed below. Most experimental activity takes place at CERN, Brookhaven, and DESY as well as other facilities in Europe and overseas.
The NBI has a long tradition of international collaboration and is a meeting ground for scientists from all over the world. Short term visitors at the NBI number more than 150 per year, not including participants in the many symposia, workshops, and schools arranged each year. As a result, the NBI has the infrastructure needed to care for many foreign visitors and has a network of international contacts with the nearly 2000 physicists who have spent longer periods at the NBI and Nordita. The scientific staff at the NBI now comprises 25 permanent scientists, about 25 temporary scientists including long-term visitors, and 21 Ph.D. students.

