Osterburg (Groothusen)

Groothusen is an old Langwurtendorf – a village on an artificially-built ridge – in the municipality of Krummhörn in western East Frisia on Germany's North Sea coast. It lies about 15 kilometres northwest of the seaport of Emden and has a population of 474 (2006). The ridge or warf has a length of about 500 metres and a width of some 130 metres and was built to raise the village above the water level should flooding from the sea occur, for instance, during a storm tide.

Krummhörn is a municipality in the district of Aurich, in Lower Saxony, Germany. It is situated near the Ems estuary, approximately 15 km southwest of Norden, and 10 km northwest of Emden. The community (Gemeinde) of Krummhörn comprises 19 villages, and their official population as of 31 December 2008 is as follows:

Woquard (East Frisian Low Saxon: Wokert) is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located just to the west of Pewsum, bordering its urban area. Woquard is the smallest village in the municipality. It is first mentioned in 1632, under the name Wachtwert. The Woquard coat of arms reflects the history of the village. The colors blue and yellow refer to the Swedish royal family and recall Catherine Vasa of Sweden. The lion refers to the chieftains' coat of arms of the Manninga family; the fleur-de-lis from the crest to the Counts Cirksena; the star can be associated with the ancient coat of arms of Norden.The expression "Wokert is 'n Rad" ('Woquard is a wheel') refers to the streets of the village, which resemble the spokes of a wheel, with St. Mary's Church as the center. The oldest church bell in East Frisia hangs in the tower of the church, which dates from 1789. There used to be a castle on the west side of the church, but it was destroyed by a chieftain of Pewsum.

Hamswehrum is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located between Upleward and Groothusen. The village is first mentioned in a written source in 1375 and was probably founded by the inhabitants of a disappeared place (Hamswehr or Hayenswehr). Buildings such as the Geele Börg ('Yellow Castle') appear again and again in the history of the place. Nowadays, only a farm named after this castle remains a reminder of this. The 15th-century church was demolished in 1967 and replaced by a new church the following year: the current St. Maria's Church.

Manslagt is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located between Pilsum and Groothusen. Manslagt was historically located on an island in the former Bay of Sielmönken and was built on a warft. It was first mentioned around the 11th century. The Church of Manslagt dates from around 1400.

Pewsum is a village in the municipality of Krummhörn in the west of East Frisia, in Lower Saxony, Germany. Pewsum is both the administrative seat as well as the trade and craft centre of the municipality. The number of inhabitants was 3,352 in 2006 and the village lies at a height of 0 m above sea level (NN).

Upleward (East Frisian Low Saxon: Plewert) is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located between Hamswehrum and Campen. Upleward is built on a warft which has been inhabited since at least the Early Middle Ages. The village center consists of traditional single-family houses, built around the Gothic church from the 14th century.

Woltzeten is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village consists of two built-up areas, Woltzeten in the west and Woltzetener Vorwerk in the east. The village is located on a warft, three kilometers south of Pewsum and about eight kilometers northwest of the city of Emden. The current church of Woltzeten was built in 1727. Before that there was a larger church, which had to be demolished in 1725 due to dilapidation. This predecessor church probably dates from the 12th century. A Premonstratensian monastery stood in the village from the 15th to 16th century, which probably bore the name Blauhaus, named after the color of its roof. An earlier monastery in Woltzeten was lost in a storm flood in the 13th century.

Campen is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. Although Campen is only a small village, it still has two churches: the Reformed village church from the thirteenth century and a Old-Reformed church from 1905. Near the village is the Campen lighthouse. It was built in 1889 and has been in use since 1891. It is 65.3 meters high, making it the tallest lighthouse in Germany.The village of Campen was first attested as Campe maiori in the 10th century.

Canum is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located just to the east of Pewsum. The village is built on a warft. It is already mentioned in 950 as Caninghem. The village church was built in the middle of the warft in the 13th century.

Visquard is a village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. The village is located to the north of Pewsum and to the south of Greetsiel. The village church dates from the 13th century. To the northwest of Visquard lay the Appingen Abbey, of which currently only a small hamlet remains.

Loquard is an old village in the region of East Frisia, in Lower Saxony, Germany. It is part of the municipality of Krummhörn. It is a traditionally Lutheran village. The village, built on a warft was first mentioned in the 10th century, although archaeological findings suggest the place might already have been inhabited in the 8th or 9th century. The Church of Loquard, built on the warft, dates from the 13th century.