The church of Saint-Julien-le-Pauvre stands in the shade of the oldest tree in Paris, in the Square René Viviani. Located in the heart of the Latin Quarter, its construction began in the 12th century, on the foundations of a 6th-century church. The church is considered to be one of the oldest in the capital. Art lovers can admire the interior of this listed building: the capitals of the southern columns decorated with harpies, a 1900 iconostasis from the Byzantine rite, and a slab from the ancient Roman road from Lutetia to Orléans. Large 12th-century buttresses are visible from the outside. Since 1889, the church has been used for Greek Melchite Catholic worship. Classical music concerts are regularly held in this unique setting.