Sant'Agnese in Agone. Sant'Agnese in Agone is a 17th-century Baroque church in Rome, Italy.
It faces onto the Piazza Navona, one of the main urban spaces in the historic centre of the city and the site where the Early Christian Saint Agnes was martyred in the ancient Stadium of Domitian. Construction began in 1652 under the architects Girolamo Rainaldi and his son Carlo Rainaldi.
After numerous quarrels, the other main architect involved was Francesco Borromini. The church is a titular deaconry, with Gerhard Ludwig Müller being the current Cardinal-Deacon.
As well as religious services, the church hosts regular classical concerts in the Borromini Sacristy, from sacred Baroque works to chamber music and operas. The building of the church was begun in 1652 at the instigation of Pope Innocent X whose family palace, the Palazzo Pamphili, is adjacent to this church.
The church was to be effectively a family chapel annexed to their residence. The first designs for a centralised Greek Cross church were prepared by the Pamphili family architect, Girolamo Rainaldi, and his son Carlo Rainaldi in 1652. They reorientated the main entrance to the church from the Via Santa Maria dell'Anima, a street set one urban block away from the piazza, to the Piazza Navona, a large urban space that Innocent was transforming into a showcase associated with his family. It had been the intention to build the new church over the