South Athens - regional unit - was created in 2011.
West Athens - regional unit - was created in 2011.
Kavala - regional unit - was created in 2011.
Thira - regional unit - was created in 2011.
Ioannina - regional unit - was created in 1915.
Rhodes - regional unit - was created in 2011.
Preveza - regional unit - was created in 2011.
Lemnos - regional unit - was created in 2011.
Florina - regional unit - was created in 1915.
Serres - regional unit - was created in 1915.
Pella - regional unit - was created in 2011.
Kilkis - regional unit - was created in 2011.
Rethymno - regional unit - was created in 2011.