From the 1500s Hop was noble estate for the law speaker in Bergen and Gulen judicial districts. Several of the law speakers were of noble descent, such as Hans Hansen Lillienskiold and Niels Knagenhielm. The beautiful main building, still standing, was erected by the Bergen merchant Thomas Erichsen in 1793-95. He also established a magnificent garden with an 800 metres long linden avenue reaching down to the stone boathouse at Hop harbour.
In the sunny, steep fjord landscape along Sørfjorden on the east side of Osterøy is the farm Havrå. The small “hamlet” is one of the few undisturbed farming communities that gives us the impression of the large communal yards in West Norway in the 1700s, with houses built close together and strips of arable land.
The grand farm Aga on the west side of Sørfjorden, came under protection in 1937, when the agricultural reform threatened to disperse the old clustered settlement. “Lagmannsstova”, named after the “lagmann” (law speaker) Sigurd Brynjulfsson, was already protected in 1924; one of the authentic profane wooden buildings from the Middle Ages still standing. All the same it is the farmyard itself that is the key cultural monument.