From 23 December 2006 to 20 February 2007 a special exhibition of models and multimedia presentations was held at Castel dell'Ovo to showcase all of the planned improvements to the Metropolitana di Napoli network, and was extremely well received by Neapolitans.
Dari 23 Desember 2006 hingga 20 Februari 2007 sebuah pameran khusus mengenai model dan presentasi multimedia diadakan di Castel dell'Ovo untuk menunjukkan semua rencana pengembangan jaringan Metropolitana di Napoli, dan sangat diterima oleh penduduk Napoli.