I do not recall being taught in my history classes about the new towns built in Italy during the fascist era.
One of them was Sabaudia which I discovered thanks to Sun, Sand and Mussolini (by Elizabeth Rosenthal) on Globespotters.
The city was inaugurated in April 1934.
As for the beaches, the writer suggests Saporetti as the best one.
The beach site touts many reasons for visitors to choose it including its proximity to Mount Circeo where they say the remains of the Neanderthal man were discovered and aerobic lessons at sunset for mothers so they can keep in shape.
Related: When in Rome visit ‘Obika’ Mozzarella Bar, Italy’s twist on the Sushi Bar