The Pregolya or Pregola (Russian: Прего́ля; German: Pregel; Lithuanian: Prieglius; Polish: Pregoła) is a river in the Russian Kaliningrad Oblast exclave.
It starts as a confluence of the Instruch and the Angrapa and drains into the Baltic Sea through Vistula Lagoon. Its length under the name of Pregolya is 123 km, 292 km including the Angrapa. The basin has an area of 15,500 km². The average flow is 90 m³/s.
Euler's Seven Bridges of Königsberg problem was based on the river's bridges in Königsberg, now Kaliningrad.
The ancient name by Ptolemy of the Pregolya River is Chronos.
Coordinates: 54°41′N 20°23′E / 54.683°N 20.383°E / 54.683; 20.383
It was cold that day in January 1931
Working late, high over the ground in the harbour of
Gothenburg
The ground was frozen, the wind was cold and the snow was
falling down
A shout in the dark, the ground turned red - Another
worker was dead
Chorus:
Honour to the workers who built our town
And risked their lives since 1621
To the workers who built our town
And risked their lives since 1621
For all that you have done ... since 1621
Chorus
... Honour to the workers who built our town
... And risked their lives since 1621
1621 - The year our town was born
With a harbour of pride and mighty ships that made our
town a name
A history worth reminding of and tell your kids about
When the people worked and risked their lives and gave us
a place to love