Ferstad is well worth a visit. The farm lies on a little hillock south of Lekven: a beautiful official residence from the 1700s.
The 28th November 1914 was a day to remember for the Os inhabitants. This was the day they could turn the switch on the wall and have electric light in their houses. It was like opening the door on the future when the power station at Gåssand was put into operation.
At the bottom of Vargavågen on Halhjem lies Grødalshaug, a 30 metres high rocky outcrop between the bay and a moist valley cleft. On the south side of the rock is a steep rock cliff facing the valley, the bog and the stream. On this rock face we find rock carvings from the Bronze Age.
The small white-painted chapel with the red brick tiled roof just south of the monastery ruins at Lyse was built in 1663 as a local chapel for the monastery estate, following the takeover of the property by the District Recorder (Stiftskriver) Niels Hanssøn Schmidt two years previously. The chapel, with its harmonic proportions, lies in the cultural landscape beside the grand monastery estate, witness to a time gone by. But even today, there is a tradition of high mass on the 2nd day of Ascension in Lyse Chapel.
The coastal settlement of Os begins to take form in the middle of the 1800s. This is when craftsmen and traders begin to settle at the river delta.