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After the demolition of the city walls, the properties in Karlín were counted among the cheapest properties of Prague. For that reason, the number of industrial enterprises and dwellings grew very quickly in the area of "Rohan Island" (Rohanský ostrov). On 1 January 1922 Karlín was incorporated into Prague. At this time, the electrical engineering pioneer and industrialist František Křižík had great influence in the area. He established a streetcar line, which he then sold to the city.
In the 1970s, traffic was rerouted onto the Rohanské nábřeží and the main arterial road was relieved. Since 1990 Karlín is connected to the Prague Metro by Křižíková station named after Křižík, and a pedestrian zone has been established as well. In 2002 Karlín was severely affected by the 100-year flood. It has since recovered and is becoming a new destination for businesses and residences.
Notable buildings
A notable building in Karlín is the Karlín Railway Bridge, which connects the Masaryk Railway Station to the Bubny station. The viaduct (also called Karlín viaduct) was named after Alois Negrelli, it is 1,111 metres (3,645 ft) long and was put into operation on 1 June 1850. It is the longest bridge/viaduct on Czech territory.