title: Krnsko
text: # Krnsko
  
  Krnsko is a municipality and village in Mladá Boleslav District in the Central Bohemian Region of the Czech Republic. It has about 600 inhabitants.
  
  ## Administrative parts
  
  The village of Řehnice is an administrative part of Krnov.
  
  ## Geography
  
  Krnsko is located about 5 kilometres (3 mi) southwest of Mladá Boleslav and 38 km (24 mi) northeast of Prague. It lies in the Jizera Table. The municipality is situated on the right bank of the Jizera River.
  
  ## History
  
  The first written mention of Krnsko is from 1360 and of Řehnice from 1319.
  
  ## Sights
  
  The railway bridge in Krnsko, Stránovský viaduct, was built in 1924 and has been protected as a technical monument. The length of the bridge is 152 m (499 ft) and the maximum height above the lowest point of the bridge is up to 27 m (89 ft).
  
  ## Gallery
  
  * Stránovský viaduct
  * Municipal office
  * Post office
  