Austin, USA (United States) with 9 records
Montjuïc Park, Spain with 3 records
Barcelona City, Spain with 2 records
Detroit, USA (United States) with 2 records
Llobregat Delta, Spain with 2 records
Málaga, Spain with 2 records
Gibraltar, Gibraltar with 2 records
Inks Lake State Park, USA (United States) with 2 records
Sabadell, Spain with 2 records
Michigan, USA (United States) with 2 records
California, USA (United States) with 1 record
Barcelona Airport, Spain with 1 record
Niagara Falls, Canada with 1 record
Florida, USA (United States) with 1 record

This is a list of the top 20 specific localities, sorted by the total amount of materials.