The Cosmic Dawn Center (DAWN) is a new international research center of excellence, primarily funded by the Danish National Research Foundation. DAWN is located in Copenhagen at the Niels Bohr Institute, University of Copenhagen, and at the Space division of the Technical University of Denmark (DTU-Space). The center is dedicated to uncovering how and when the first galaxies, stars and black holes formed, through observations with the prime telescopes of the next decade (ALMA, JWST, Euclid, E-ELT, HST) as well as through theory and simulations.