The Landenberghaus company offers a range of services focused on gastronomy and events. The core activities include: Gastronomy: The company operates a traditional restaurant, a cellar for up to 65 people that can be rented for corporate events and family celebrations, as well as a summer terrace with a view of Lake Greifen. Events: Landenberghaus offers various rooms for events, such as the Landenbergsaal, the Pfarrstube, and the cellar, which can be rented for concerts, family dinners, company parties, and other occasions. Boat Rental: The company offers boat rentals to take guests onto Lake Greifen. Overall, the company's core activity can be described as gastronomy and event management, with a focus on renting out rooms and providing culinary services.