Question: Which Floors have a Location of Ljubljana, and a Name of TR3?
SQL: SELECT "Floors" FROM "2-15062421-1" WHERE "Location" = 'Ljubljana' AND "Name" = 'TR3';

Question: Which Rank is the lowest one that has a Name of Maribor Cathedral?
SQL: SELECT MIN("Rank") FROM "2-15062421-1" WHERE "Name" = 'Maribor Cathedral';

Question: Which Name has a Location of Ljubljana?
SQL: SELECT "Name" FROM "2-15062421-1" WHERE "Location" = 'Ljubljana';

Question: Which Height Metres / feet has a Rank of 8, and Floors of 3x17?
SQL: SELECT "Height Metres / feet" FROM "2-15062421-1" WHERE "Rank" = 8.0 AND "Floors" = '3x17';