Ostsee.de is an online travel and information portal for exploring and planning holidays along Germany’s Baltic Sea coast. It helps visitors discover seaside resorts, islands, historic Hanseatic towns, fishing villages and coastal landscapes, with information on attractions, day trips and seasonal activities. The site also provides a searchable booking service for accommodation, including hotels, guesthouses, holiday apartments and houses, bungalows, hostels, and campsites. Travelers can browse holiday offers and find practical booking information, while families and visitors with pets can explore relevant trip-planning resources.

Beyond accommodation, Ostsee.de features event listings, sightseeing recommendations, weather information, and guides to sports and recreation, including sailing, fishing, diving, and windsurfing. Its editorial content covers local nature, coastal wildlife and plants, beach finds such as amber, and ideas for visits throughout the year. The portal also lists cruise ship arrivals at several Baltic ports and offers yacht-charter information. With its mix of destination guides, travel inspiration, practical resources and booking options, Ostsee.de supports visitors planning holidays ranging from active breaks to relaxing seaside stays.