Rosendal Drivhus (greenhouse rebuilt in 2004), Baroniet Rosendal

The greenhouse recalls the horticultural drive of the owner of the entailed estate, Marcus Gerhard Hoff-Rosencrone, who in 1849 hired the gardener Ludvig Lundberg to develop gardening at the barony and in the district. The protection regulation places the creation of the present kitchen garden around 1850, together with the landscape park. Two greenhouses and five cold frames then stood just below the Hundehaugen. The original greenhouse, put up around 1860, was heated by flues from a boiler house on the spot where the Hagecafé stands today; it was used to raise and overwinter many exotic flowers, vegetable plants and other crops. In the twentieth century gardening was gradually neglected and the greenhouse fell into decay. The estate had been given to the University of Oslo in 1927.

The present greenhouse is a copy built on the foundation wall of the old one. The regulation calls it new in 2004; the Askeladden database dates it to 2005 and places the original around 1860 in one passage and around 1870 in another. It was supplied by the English firm Victorian Greenhouses, to plans by the architect Elin Thorsnes according to the database. The Hagecafé & Butikk, built in 2005, stands on the foundation wall of the former second greenhouse. Although recent, the greenhouse is protected by a regulation covering the state's cultural properties, dated 20 November 2015 in Askeladden, because it documents the importance of producing ornamental and useful plants for the barony.

The structure is a copy of the greenhouse of around 1860, raised on its foundation wall and supplied by an English maker. The protection text covers exterior and interior: construction, façade composition, plan, materials, surface treatment, and elements such as windows and doors; fixed fittings are part of the protected interior. The barony's owner speaks of sitting "under a glass roof" in the greenhouse. Askeladden notes that the interior layout remains flexible for present use, made up of garden markets and interpretation activities.

The building outline in OpenStreetMap, tagged as heritage and carrying the same building number as the register (22804324), measures about 14 m by 9 m. The Hagecafé & Butikk, built in 2005, is a distinct neighbouring building (number 22804316) of which only the exterior is protected; the café occupies that building and extends, according to the owner, under the glass roof of the greenhouse, some ten metres away.

An article on the Bo Bedre website, dated 2008, writes that Mediterranean plants, vine, peach and citrus, grow inside and that the more exotic plants thrive there; pots of southern plants are put outdoors on fine days. A regional promotional article of June 2026 describes lunch served among geraniums, citrus trees and roses in full bloom. No inventory or detailed species name is published.

Around it, the restored kitchen and herb garden supplies fruit, berries, vegetables, salads and herbs that feed the café menus. The 2008 article also mentions a plant sale right next to the herb garden. The protection regulation, for its part, ties the greenhouse to the production of ornamental and useful plants for the barony.

The greenhouse sits in the Rosendal garden, less than a hundred metres from the manor of 1665, next to the Hagecafé: in season, visitors sit there for lunch. The barony's website says the garden is accessible all year, with a paid entry; the manor tours and the café follow the season, May to August in 2026. A regional guide recommends two to three hours for the garden and the café. The Hardangerfjord Express links Bergen to Rosendal in about two hours, and a walk of about 1.5 km leads to the manor. The visit combines with the roses of July, the chamber music festival in August and the Hattebergfossen waterfall.