Bizzaccheri trained under the architect
Carlo Fontana and possibly also under
Carlo Rainaldi. In 1684 he became a member of the
Virtuosi al Pantheon, 1712 its "Reggente". He was also a member of the
Accademia di San Luca from 1697. He also designed the tomb monument erected by the prince from 1705–07 to his ancestor
Cardinal Cinzio Aldobrandini in
San Pietro in Vincoli. The sculpture of a winged skeleton and a pair of
putti on this monument are by
Pierre Le Gros the Younger. From 1695 he succeeded
Giovanni Antonio de' Rossi as architect of the
Monte di Pietà in Rome and finished the work on its chapel by 1700 where the dome is decorated to his design. 1700-02 he added the chapel's
vestibule. From 1709-12 and from 1712-19 he worked for the Tribunale delle Strade. He was also until 1715 the architect for the
cathedral of
Orte, a town where also extended the palace of Cardinal Nuzzi. Bizzaccheri was never assigned any major tasks but nevertheless played an important role in the transformation of the
borrominesque vocabulary into the language of Roman rococo. This is exemplified by the facade of
Sant’Isidoro a Capo le Case, his most distinguished work, which he constructed from 1704-05 using the extant staircase and
portico. He was very much at the forefront of stylistic change and anticipated later tastes as is demonstrated by his completion of the Cappella di
San Nicola di Bari, financed by Paolo Girolamo della Torre, in
Santa Maria Maddalena. The chapel was begun by
Mattia de Rossi in 1690 and finished by Bizzaccheri from 1694–96 in tones that would determine the colour scheme of the rest of the church in the mid-18th century. ==Other works==