Mausoleum of Constantina
church in Rome
The Mausoleum of Constantina, also known as the Mausoleum of Santa Costanza, was built in the 4th century AD for Constantina (also known as Constantia), the daughter of the emperor Constantine I. It later became a church. It is located in Rome on the Via Nomentana, within the monumental complex of Sant'Agnese fuori le mura.
It is one of the best preserved buildings from Late Antiquity left in Rome and includes original ceiling mosaics. It was adjacent to the earlier basilica, now in ruins, built by Constantine I from 338 as a funerary hall. It was also built over part of the earlier Catacombs of Saint Agnes in which the martyr Saint Agnes is believed to be buried and over whose tomb was a small chapel nearby.
According to the traditional view, the mausoleum was built in the reign of Constantine I for his daughter Constantina, later also known as Constantia or Costanza, who died in 354. Ultimately, Constantina's sarcophagus was housed here, but it may have been moved from an earlier location.
The mausoleum is of circular plan with an ambulatory surrounding a central dome and survives in essentially its original form. Despite the loss of the coloured stone veneers of the walls, some damage to the mosaics and incorrect restoration, the building stands in excellent condition as a prime example of Early Christian art and architecture. The vaults of the apses and ambulatory display well preserved examples of Late Roman mosaics.
The public source identifies “Mausoleum of Constantina” as church in Rome. This brief keeps that definition visible, then builds a research path around Mausoleum, Constantina and church.
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Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q831361. VIAF identifies the subject as 125933443. The Library of Congress control number is nr88009416. Authority coordinates are 41.923, 12.517. 2 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “Mausoleum of Constantina” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.