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Home / Famous Catholic Churches in Rome /

The Basilica of St. Mary of the Angels and the Martyrs

Written by: Kate Zusmann

The Basilica of St. Mary of the Angels and the Martyrs inside
Opening Hours
Sunday: 10:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Monday: 8:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Tuesday: 8:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Wednesday: 8:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Thursday: 8:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Friday: 8:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Saturday: 10:00 AM - 1:00 PM, 4:00 PM - 7:00 PM
Closest bus stops
Repubblica3 min 135 m: 38 66 82 85
Terme Diocleziano2 min 124 m: 38 64 66 82
Closest subway stations
Termini51 min 2.5 km: B
Barberini 14 min 701 m: A
Address P.za della Repubblica, Roma
Website www.santamariadegliangeliroma.com

The Basilica of St. Mary of the Angels and the Martyrs (Santa Maria degli Angeli e dei Martiri) is an impressive church initially designed by the renowned Renaissance architect Michelangelo. It is known for its unique circular shape and grandeur, with a dome that the Pantheon inspired. This basilica holds historical significance as it was built on the ancient Roman Baths of Diocletian ruins, making it a captivating blend of ancient and Christian history.

Contents

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  • History of The Basilica of St. Mary of the Angels and the Martyrs
    • Construction
  • What to See Inside
  • How to Visit
  • Things to Know Before Visit
    • When was the Basilica of St. Mary of the Angels and the Martyrs in Rome constructed?
    • What is the church built on ancient Roman baths?
    • Who designed the dome of the Basilica of St. Mary of the Angels and the Martyrs in Rome?
  • Nearby Attractions

History of The Basilica of St. Mary of the Angels and the Martyrs

The Basilica of St. Mary of the Angels and the Martyrs, also known as “Santa Maria degli Angeli e dei Martiri” in Italian, is a fascinating church located in Rome with a rich history that spans centuries. Its history is closely tied to the ancient Roman Baths of Diocletian, initially constructed in the 4th century AD by the Roman Emperor Diocletian. These baths were among the largest and most luxurious public baths in ancient Rome, covering an extensive area and serving as a symbol of the opulence of the Roman Empire.

The transformation of the baths into a Christian basilica began in the 16th century, thanks to the creative genius of the Italian Renaissance architect Michelangelo. In 1563, Pope Pius IV commissioned Michelangelo to convert a portion of the massive baths into a church, thus preserving the ancient structure’s historical significance while repurposing it for Christian worship. Michelangelo’s design was unique and innovative, featuring a central circular nave and a massive dome inspired by the Pantheon’s design. This architectural masterpiece reflects the Renaissance’s interest in blending classical and Christian elements.

The Basilica of St. Mary of the Angels and the Martyrs structure

Read also: The Basilica of San Giovanni in Laterano

Construction

The basilica was consecrated in 1566 and was subsequently named St. Mary of the Angels and the Martyrs to honor the Christian martyrs who had suffered persecution during the reign of Emperor Diocletian. The church’s interior is adorned with impressive frescoes and works of art, making it a testament to Michelangelo’s architectural brilliance and the artistic achievements of the Renaissance period. The basilica also houses a meridian line, which was used to calculate the date of Easter, a function related to the Gregorian calendar reform.

The Basilica of St. Mary of the Angels and the Martyrs

Today, the Basilica of St. Mary of the Angels and the Martyrs stands as a remarkable fusion of ancient Roman history and Christian faith, attracting visitors worldwide who admire its architectural beauty and contemplate the layers of history that have shaped this magnificent church. It remains a significant pilgrimage site and a symbol of the enduring connection between the ancient and Christian worlds in the heart of Rome.

What to See Inside

When visiting the Basilica of St. Mary of the Angels and the Martyrs in Rome, Italy, there are several notable features and attractions to explore:

  1. Michelangelo’s Dome: The basilica’s central dome, designed by Michelangelo, is a masterpiece of Renaissance architecture. Its grandeur and beauty are a highlight of the church’s interior. You can admire the intricate details and the impressive artwork adorning the dome’s interior.
  2. Meridian Line: Inside the basilica is a meridian line on the floor, known as the “Salviati Meridian,” which was used for calculating the date of Easter. This historical feature is an exciting piece of scientific and religious history.
  3. Ancient Roman Baths: The basilica was built within the ruins of the ancient Roman Baths of Diocletian. You can explore the vast interior spaces that once served as Roman baths. These remnants provide a unique perspective on the Roman Empire’s architectural and engineering achievements.
  4. Chapels and Altars: St. Mary of the Angels and the Martyrs has several chapels and altars, each with artistic and historical significance. Be sure to visit them to admire the religious art and architecture.
  5. Artwork: The basilica houses a variety of artwork, including paintings, frescoes, and sculptures. Look for pieces by renowned artists such as Domenico Parodi and Giovanni Odazzi. The interior is richly decorated and offers a feast for art enthusiasts.
  6. Religious Services: Depending on the time of your visit, you may have the opportunity to attend a religious service or Mass in this beautiful church. The basilica continues to serve as a place of worship for the Catholic community.
  7. Gardens and Courtyard: Surrounding the basilica are gardens and a courtyard providing a tranquil escape from the bustling city. Stroll through these serene spaces and enjoy some moments of quiet reflection.
  8. Museum: The basilica also houses a museum with a collection of religious artifacts, manuscripts, and historical items related to the church’s history and connection to Michelangelo.
  9. Gregorian Calendar Information: Learn about the basilica’s role in the Gregorian calendar reform and its significance in determining the date of Easter.
  10. Pantheon’s Influence: Appreciate the influence of the Pantheon’s design on Michelangelo’s dome. Compare the two structures to see how elements of ancient Roman architecture were incorporated into this Renaissance church.

The dome of Basilica of St. Mary of the Angels and the Martyrs

How to Visit

  • Since it is a religious site, it’s essential to dress modestly. Avoid wearing sleeveless tops, shorts, and short skirts. Cover your shoulders and knees as a sign of respect.
  • The Basilica of St. Mary of the Angels and the Martyrs is located in the Piazza della Repubblica, near Rome’s Termini train station. It’s easily accessible by foot, taxi, or public transportation.
  • The basilica has free entry.
  • Opening hours: daily 7 am – 7.30 pm

Things to Know Before Visit

When was the Basilica of St. Mary of the Angels and the Martyrs in Rome constructed?

The Basilica of St. Mary of the Angels and the Martyrs was consecrated in 1566. It was subsequently named St. Mary of the Angels and the Martyrs to honor the Christian martyrs who had suffered persecution during the reign of Emperor Diocletian.

What is the church built on ancient Roman baths?

The Basilica of St. Mary of the Angels and the Martyrs in Rome is closely tied to the ancient Roman Baths of Diocletian, initially constructed in the 4th century AD by the Roman Emperor Diocletian. These baths were among the largest and most luxurious public baths in ancient Rome, covering an extensive area and serving as a symbol of the luxury of the Roman Empire.

Who designed the dome of the Basilica of St. Mary of the Angels and the Martyrs in Rome?

The basilica's central dome, designed by Michelangelo, is a masterpiece of Renaissance architecture. Its grandeur and beauty are a highlight of the church's interior. You can admire the intricate details and the impressive artwork adorning the dome's interior.

Nearby Attractions

Fountain of the Naiads
3 min 430 ft 130 m
Piazza della Repubblica
3 min 460 ft 140 m
Baths of Diocletian
3 min 520 ft 160 m
St. Paul's Within the Walls
6 min 1050 ft 320 m
Termini Central Train Station
9 min 1440 ft 440 m
Palazzo Barberini
12 min 1940 ft 590 m
Piazza Barberini
14 min 2230 ft 680 m
Basilica di Santa Maria Maggiore
14 min 2300 ft 700 m
Triton Fountain
14 min 2360 ft 720 m
Capuchin Crypt
15 min 2430 ft 740 m

Author: Kate Zusmann

Kate Zusmann

I have lived in the Eternal City for the past 12 years. They say every angle of Rome has its history, and I'm here to tell you about the most intriguing historical facts and city legends. :)

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About us ROME.US Authors Kate Zusmann and Artur Jakucewicz
2025.We're Kate and Artur, a duo bound by our shared fascination with the Eternal City – Rome. Our paths, driven by a mutual passion for its timeless stories and architectural marvels, converged in a way we had never imagined.

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