The interior is open to public for events only.
Ticket prices for events vary. Please check the official website for more info.
Wikipedia https://ru.wikipedia.org/wiki/Театр_Марцелла
Official website http://www.tempietto.it
Адрес Via del Teatro di Marcello, Rome, Latium, 00186, Italy
Координаты 41°53'31.055" N 12°28'46.937" E