Santa Maria della Vittoria  is a small basilica church in Rome, on Via XX Settembre.
For reference, a plan of the church is available 
here.
   
The church was built by the 
Discalced Carmelite Friars, with financial support from 
Cardinal Scipione Borghese, nephew of 
Pope Paul V. Construction started in 1603 or 1608, led by 
Carlo Maderno. It was first named San Paolo, St Paul's, after an older chapel on the site.
After the Catholic victory in the Thirty Years' War at the 
Battle of White Mountain in 1620, which reversed the Reformation in Bohemia, the church was rededicated to the Virgin Mary. (Turkish standards captured at the 1683 siege of Vienna hang in the church, as part of this victorious theme.)
The church was partially destroyed by fire on 29 June 1833, and rebuilt to a design by Carnevali, for the commission of 
Prince Alessandro Torlonia in 1880.