The manhole covers in Rostock display the coat of arms of the city. The coat of arms dating back to 1367 depicts a golden griffin of a blue field (representing the former princes of Rostock) with bars of silver and red (the colours of the Hanseatic League). As a member of the Hanseatic League the city is generally named Hansestadt Rostock.
This manhole cover in the streets of Erfurt shows the emblem of the city. The emblem looks similar to the Wheel of Mainz. As a matter of fact Erfurt has been linked to the Electorate of Mainz for many years. [German]
This manhole cover in Gotha shows the coat of arms of the German state of Thuringia and mentions the Stiftung Thüringer Schlösser und Gärten, a foundation promoting the castles and gardens of Thuringia.
Manhole cover at Prague main railway station (Praha hlavní nádraží) featuring the former main entrance of the railway station designed by Czech architect Josef Fanta, The interior of the old Art Nouveau entrance hall is still worth a visit.