It is a beautiful picturesque village in the province of L'Aquila, located on a large terrace clinging to the mountain's façade, carved by the crossing, over the centuries, of the river Sagittario. The name, according to some theories, derives from the Latin "ad versum" (in front, close to the river with reference to its position in front of the above mentioned river).
In 1150 the lands of Anversa and Castrovalva (a current district of Anversa degli Abruzzi) belonged to Count Simon de Sangro. His heir, Raynaldo, lost the domain over the fiefdoms, for having supported the Emperor Frederick II. Only in 1250 the lands returned in possession to the Di Sangro family. Over the next centuries the lands we ceded to the Caldora of Pacentro, to the da Procida, to the Belprato and to the Recupito.

Not to miss:
- the remains of the Norman castle, built in the first half of the XII century by Antonio di Sangro;
- the Church of Santa Maria delle Grazie (XVI century), with three naves and a limestone portal in Renaissance style;
- the Church of San Marcello (XI century), in Romanesque style with a late-Gothic portal;
- the remains of the Church of Santa Maria ad Nives, with an adjoining monastery, which already belonged to the Benedictines in the IX century;
- the remains of the Church of St. Vincent (XIII century);
- the Case Lombardi, a row of buildings erected to host the workers of Northern Italy, made between 1480 and 1520;
- the necropolis of Coccitelle, the necropolis of Cava Rena and San Carlo - Fonte Curato, dating to the IV century B.C. and built by pre-Roman populations;
- the admirable gorges of the river Sagittario.