You can’t miss the distinctive curved walls of The Jubilee Church [wiki] in Tor Tre Teste, Rome. It was designed in 1996 by architect Richard Meier, who said that the modern-styled church is the “the crown jewel of the Vicariato di Roma’s (Archdiocese of Rome) Millennium project.” And right he was!
The curved walls not only serve the engineering purpose of minimizing thermal peak loads in the interior space, they are also a religious methapor:
Three circles of equal radius generate the profiles of the three shells that, together with the spine-wall, make up the body of the nave. While the three shells discretely imply the Holy Trinity, the reflecting pool symbolizes water in the ritual of Baptism.