Tag Frederiksberg train station with extended railway tags
Add points and chronology for the three different main train stations
Draw railway corridor (station) more closely around the buildings
Improve source for defensive works, add more specific start dates and end dates
Add GNIS school from OSM with details from external source
Adjust water to align with building
Add some minor bridges around the fortifications, update start/end dates for existing bridges
Add defensive works around Kastellet, update source and start date for existing defensive works
Fix location, remove end date since this hotel still exists, add wikidata
Add 1872 street towards Vesterbro
Fix reservoir geometry and add nearby streets