The sustainable development of the cultural and nature heritage is the basis of an attractive tourist offer in the Baltic Sea region. This offer very often has a regional and sometimes even a local character. As to the cultural heritage tourism, the cities in the Baltic Sea region are touristic magnets that play a key role in the further development of the region as a tourist destination. In order to enhance the accessibility and the visibility of the cultural and nature heritage sites, cross border and transnational cooperation should be increased. Through joint products, standards and marketing the tourist potential of the cultural and nature heritage could be expolited in a more effective and sustainable way. In order to be successful in this field, it is key to bring together the competent representatives of the cultural and nature heritage facilities with the destination management organisations and the private sector.