Roccalbegna is home to several notable fortifications, such as the
Cassero Senese (built in the 13th century by the
Aldobrandeschi, renovated in the 15th century) and the
Rocca Aldobrandesca, located on the hill overlooking the town and the
Albegna river (whence the town's name). Outside the town there is the large
castle of Triana (known from 760), also owned by the Aldobrandeschi and then by the
Sforza of Santa Fiora; it has maintained its medieval line of walls. The hamlet of Cana has also an Aldobrandeschi-built line of walls from the 13th century. Also notable is the Romanesque-Gothic church of
Santi Pietro e Paolo (13th-14th centuries, modified in the 18th century). It has a large Gothic portal surmounted by a
rose window. It houses some parts of a polyptych by
Ambrogio Lorenzetti (c. 1340), a
Pietà by
Alessandro Casolani and a 15th-century small fresc of
Madonna with Saints. ==References==