Semur-en-Auxois is a commune

Communes of France

The commune is the lowest level of administrative division in the French Republic. French communes are roughly equivalent to incorporated municipalities or villages in the United States or Gemeinden in Germany...

 of the Côte-d'Or

Côte-d'Or

Côte-d'Or is a department in the eastern part of France.- History :Côte-d'Or is one of the original 83 departments created during the French Revolution on 4 March 1790. It was formed from part of the former province of Burgundy.- Geography :...

 department in eastern France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

.

Semur-en-Auxois has a medieval core, built on a pink granite

Granite

Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...

 bluff more than half-encircled by the River Armançon

Armançon

The River Armançon drains part of north-western Burgundy in France. It rises in the département of Côte-d'Or and flows into the River Yonne at Migennes...

. The river formerly provided motive power for tanneries and mills, but its flow is now somewhat reduced by the Lac de Pont, a dam built upstream in the 19th century to provide water for the Canal de Bourgogne.

Population

Sights

• The church, La Collégiale Notre-Dame, which was started in 1225 and built in flamboyant Gothic style. It was restored in the 19th century by Viollet-le-Duc. The north tympanum
  Tympanum (architecture)
  In architecture, a tympanum is the semi-circular or triangular decorative wall surface over an entrance, bounded by a lintel and arch. It often contains sculpture or other imagery or ornaments. Most architectural styles include this element....
  
   depicts the legend of St. Thomas.
• La porte Sauvigny, built in the 15th century, it marks the entrance to the city
• The fortified castle, built in the 13th century and dismantled in the 17th century, the parts visible today are:
  • La tour de l'Orle d'Or, with a height of 44 metres and walls 5 metres thick
  • La tour de la Gehenne
  • La tour de la Prison
  • La tour Margot, behind the theater.
  • Location: 47°29′26″N 4°19′47″E
• Bridges of the city crossing the Armançon
  Armançon
  The River Armançon drains part of north-western Burgundy in France. It rises in the département of Côte-d'Or and flows into the River Yonne at Migennes...
  
  :
  • Le pont Joly, which provides a picturesque view of the city
  • Le pont Pinard
  • Le pont des Minimes
• The ramparts provide a promende with views of the river