Romanshorn

History

Romanshorn was probably settled in the 7th century, and is first mentioned in 779 as Rumanishorn in a land grant from Waldrata to the Abbey of St. Gall.

Geography

Romanshorn has an area, , of . Of this area, or 41.3% is used for agricultural purposes, while or 24.1% is forested. Of the rest of the land, or 33.4% is settled (buildings or roads), or 0.5% is either rivers or lakes and or 0.2% is unproductive land. Of the built up area, industrial buildings made up 17.1% of the total area while housing and buildings made up 4.7% and transportation infrastructure made up 1.0%. Power and water infrastructure as well as other special developed areas made up 3.2% of the area while parks, green belts and sports fields made up 7.3%. Out of the forested land, 21.8% of the total land area is heavily forested and 2.3% is covered with orchards or small clusters of trees. Of the agricultural land, 32.6% is used for growing crops, while 8.7% is used for orchards or vine crops. The municipality is located in the Arbon district, on Lake Constance. It consists of the village of Romanshorn and the hamlets of Holzenstein, Hotterdingen, Reckholdern, Riedern and Spitz. Most of the surrounding hamlets have grown together with Romanshorn.

Most-observed species

• Indian Balsam

  Impatiens glandulifera Royle · Magnoliopsida
  11,377
• Annual Fleabane

  Erigeron annuus (L.) Pers. · Magnoliopsida
  10,289
• Japanese Knotweed

  Reynoutria japonica Houtt. · Magnoliopsida
  6,635
• Butterfly-bush

  Buddleja davidii Franch. · Magnoliopsida
  3,910
• Carrion Crow

  Corvus corone Linnaeus, 1758 · Aves
  3,090
• Mallard

  Anas platyrhynchos Linnaeus, 1758 · Aves
  2,966
• Canadian Goldenrod

  Solidago canadensis L. · Magnoliopsida
  2,959
• hedgehog

  Erinaceus europaeus Linnaeus, 1758 · Mammalia
  2,751

Most recent

• M 3.7 — 2026-04-26
  4 km N of Quarten, Switzerland
• M 4.2 — 2024-06-04
  2 km NNW of Unteriberg, Switzerland
• M 3.4 — 2022-10-16
  Baden-Wurttemberg, Germany
• M 3.8 — 2022-09-01
  2 km WSW of Sevelen, Switzerland
• M 4 — 2022-07-09
  2 km NNE of Grosselfingen, Germany
• M 4 — 2020-10-25
  5 km ESE of Ennenda, Switzerland