The article 24 of the Danish copyright law permits free uses of depictions of architecture. This, however, does not extend to the works of art that are located in public places. They cannot be commercially published when they constitute the central element of the picture.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.