Twann-Tüscherz or Douanne-Daucher in French is a municipality in the Biel/Bienne administrative district in the canton of Bern in Switzerland.

The huts stood in serried ranks either longitudinally or transversely oriented to the lake.

The hut floors had a layer of peat to keep them dry and a clay hearth in the center.

The residents used hoes, sticks and simple plows to raise grain which was eaten as a porridge or bread.

They raised domestic cattle, sheep and goats constantly and hunted animals, mostly red deer, as needed.

[4] The other prehistoric sites include a Roman cremation grave in Rogget, early medieval finds in Gaicht and a burial ground in Gauchete.

The Bolligens held Twann until 1422 when they sold it to the Bernese Schultheiss Rudolf Hofmeister.

In 1237 Kuno von Twann gave the right to appoint the village priest to the Münchenbuchsee Commandery.

After the Reformation, the monastery vineyards were acquired by Bern and leased out to local farmers.

In Wingreis, the Rebhaus Thormanngut, a vineyard manor house, was built in the 16th century for Bernese patricians.

Originally it was part of the parish of Sutz which was located on the opposite side of the lake.

Many of the vineyards were owned by monasteries, hospitals and lower nobility or burghers of Bern, Biel and Nidau.

[7] It is located on the northern shore of Lake Biel and is made up of the villages of Twann, Wingreis, Tüscherz and Alfermée along with part of the village of Kleintwann, the settlements of Gaicht (676 m [2,218 ft]) and Twannberg (868 m [2,848 ft]) on a terrace in the Jura mountains and St. Peters Island (Sankt Petersinsel) in the lake.

[9] Most of the population (as of 2000[update]) speaks German (87%) as their first language, French is the second most common (6.9%) and Italian is the third (0.6%).

[12] The historical population is given in the following chart:[13][14] It is home to the Twann Bahnhof prehistoric pile-dwelling (or stilt house) settlements that are part of the Prehistoric Pile dwellings around the Alps UNESCO World Heritage Site.

One large scale excavation was carried out in 1974-76, while test borings in 1984-87 indicated that some of the archeological layers extend far into the lake.

A few years after the excavation the results of the studies were published in a 20 volume collection, which is considered the definitive reference on the neolithic development in western Switzerland.

[16] The Former Clunic Priory at St. Peter's Island, the former Thormanngut building and the Fraubrunnen house are listed as Swiss heritage site of national significance.

The villages of Tüscherz and Twann and the hamlet of Wingreis are all part of the Inventory of Swiss Heritage Sites.

[20] In 2000 about 67.8% of the population belonged to a Protestant church, 14.8% were Roman Catholic and 11.2% had no religious affiliation.

This is followed by three years of obligatory lower Secondary school where the students are separated according to ability and aptitude.

Following the lower Secondary students may attend additional schooling or they may enter an apprenticeship.