Santi Nereo ed Achilleo is a fourth-century basilica church in Rome, Italy, located in via delle Terme di Caracalla in the rione Celio facing the main entrance to the Baths of Caracalla. It has been the titular church of Cardinal Celestino Aós Braco since 28 November 2020.
Note that the cemetery church of the catacomb of Saint Domatilla on the Appian Way, virtually lost in the early Middle Ages and rediscovered in the 1870s by the archaeologist Giovanni Battista de Rossi, carries the same dedication to Nereo and Achilleo.
Wikipedia https://en.wikipedia.org/wiki/Santi_Nereo_e_Achilleo
Address 45 Viale delle Terme di Caracalla, Roma 00153, Italy
Coordinates 41°52'48.631" N 12°29'41.159" E