However, the buildings beautiful though they are have not been able to accommodate modern computerized banking equipment; increasingly, the institutions have moved to modern buildings around the city.
The bank has over 20 locations around the city. 
mnli hypothesis: The bank has over 20 locations around the city.  premise: However, the buildings beautiful though they are have not been able to accommodate modern computerized banking equipment; increasingly, the institutions have moved to modern buildings around the city.