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The city of Königsberg in Prussia (now Kaliningrad, Russia) was set on both sides of the Pregel River, and included two large islands—Kneiphof and Lomse—which were connected to each other, and to the two mainland portions of the city, by seven bridges. The problem was to devise a walk through the city that would cross each of those bridges ...
Medieval Königsberg's third town was Kneiphof, which received town rights in 1327 and was located on an island of the same name in the Pregolya, south of Altstadt. The 14th-century Königsberg Cathedral. Within the state of the Teutonic Order, Königsberg was the residence of the marshal, one of the chief administrators of the military order. [16]
The Honey Bridge is a drawbridge, one of the seven bridges of Königsberg. Connects Oktyabrsky Island and Kneiphof. Since the Kneiphof is a pedestrian zone, the de facto bridge is also exclusively pedestrian. From time to time, the bridge is used by official vehicles (delivery of materials for the restoration of the Königsberg Cathedral, as ...
Lastadie warehouses. The oldest docks of Königsberg were located on an island then known as Vogtswerder within the Pregel River. The 1286 charter of Altstadt allowed the town to build these initial docks (later known as the Kai, meaning quay) on the western coast of the island, connected to Altstadt by the Grüne Brücke (Green Bridge). [4]
Königsberg Cathedral rose high above the island town. Kneiphof Town Hall served as city hall for all of Königsberg from 1724 until 1927, when the administration moved to the Stadthaus . The island's secondary school, Kneiphof Gymnasium , was located north of the cathedral and later hosted the combined Stadtgymnasium Altstadt-Kneiphof .
Just north of the Viehmarkt was the Hohe Brücke, a bridge connecting to the island quarter of Lomse. By the Rathäusliche Reglement of 13 June 1724, King Frederick William I of Prussia merged Kneiphof and Haberberg into the united city of Königsberg. [ 2 ]
Graph Theory, 1736–1936 is a book in the history of mathematics on graph theory.It focuses on the foundational documents of the field, beginning with the 1736 paper of Leonhard Euler on the Seven Bridges of Königsberg and ending with the first textbook on the subject, published in 1936 by Dénes Kőnig.
Two of the seven original bridges were destroyed by bombs during World War II. Two others were later demolished and replaced by a modern highway. The three other bridges remain, although only two of them are from Euler's time (one was rebuilt in 1935).[2] Thus, there are now five bridges in Königsberg (modern name Kaliningrad).