Prague (accurate)
Wanna build a European city? Use zone Styles which were introduced in one of the patches.
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As it is impossible to build tunnels in Map Creation Tool, you should also build tunnels where they are marked with "TUNNEL" signs (made out of tracks)
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This is the accurate map of Prague. Heightmap was hand-made from real world cartography maps. All highways and railroads are also 1:1 copy of the real world.
ENJOY!