# San Carlo alle Quattro Fontane, Rome

> San Carlo alle Quattro Fontane is Francesco Borromini's tiny church of 1638–1641, one of the peaks of the Baroque. Architects worldwide study its rippling façade and its oval dome of coffers shaped as crosses and polygons. It stands at the Quattro Fontane crossroads, with a fountain on every corner. Entry is free but hours are short; 15–20 minutes is enough.

Web page: https://yesgo.io/italy/rome/san-carlo-alle-quattro-fontane

- City: [Rome](https://yesgo.io/italy/rome), Italy
- YesGo score: 46/100 (Yes, if nearby)
- Time on site: 20 min
- With kids: Fine with kids
- Entry: Free
- Opening hours: Short, usually mornings — check ahead
- Highlights: Borromini's oval dome, the undulating façade, the cloister
- The crossroads: Four 16th-century corner fountains
- Time needed: 15–20 minutes
- Location: Via del Quirinale 23; 7 minutes from Barberini metro
- Coordinates: 41.90181, 12.49074
- Facts checked: 10.11.2026

## Key facts

- **1638–1641** — Borromini built the church and cloister (source: English Wikipedia)
- **1665–1667** — the undulating façade was finished — his last work (source: English Wikipedia)
- **San Carlino** — its affectionate nickname, for its tiny size (source: English Wikipedia)
- **The dome** — oval, coffered with crosses, octagons and hexagons (source: English Wikipedia)
- **1588–1593** — the four corner fountains were installed (source: English Wikipedia)

## Borromini's masterpiece

**San Carlo alle Quattro Fontane** was the first major work of **Francesco Borromini**, Bernini's great rival. Spanish Trinitarian friars commissioned a church and convent on a tiny corner plot, and in **1638–1641** he produced a building that changed Baroque architecture. Romans call it **'San Carlino'**: legend says it would fit inside one of the four piers holding up St Peter's dome.

Borromini completed the rippling **façade** in **1665–1667**, at the end of his life: convex and concave sections alternate so the wall seems to sway, with saints in the niches.

## The dome

Look up at the **oval dome**. Its surface is covered in **coffers shaped as crosses, octagons and hexagons** that shrink towards the lantern at the top, making it seem taller and deeper than it is, while light pours down onto white walls.

There's no gilding or coloured marble — Borromini relied on form and light alone. The plan is a complex geometry of triangles and ovals that architects still dissect in lectures.

## The Quattro Fontane crossroads

The church stands where Via del Quirinale meets Via delle Quattro Fontane. Each of the four corners got a **fountain** in a niche in **1588–1593**: two river gods, the Tiber and the Arno, and two goddesses, Diana and Juno. Pope Sixtus V laid out the streets so that from the crossing you can see **three obelisks** — at Santa Maria Maggiore, on the Quirinal and at Trinità dei Monti — plus Porta Pia. It's narrow and busy, so watch the traffic while taking photos.

## Who was Borromini?

**Francesco Borromini** (1599–1667) came from Ticino and began as a stonecutter on St Peter's under his relative Carlo Maderno, later working alongside Bernini before the two became Baroque Rome's great rivals. Other works to seek out include the spiral dome of Sant'Ivo alla Sapienza, the façade of Sant'Agnese in Agone and the forced-perspective gallery at Palazzo Spada.

## What to see

- **The oval dome** — view it from the centre of the church.
- **The undulating façade** — best seen from the opposite corner.
- **The cloister** — a tiny columned courtyard, also Borromini.
- **The four fountains** — one on each corner.
- **Three obelisk views** — from the middle of the crossing.
- **Bernini's Sant'Andrea al Quirinale** — 3 minutes along the street.

> **Bernini versus Borromini** Three minutes along Via del Quirinale is Bernini's oval church of Sant'Andrea al Quirinale. Visit both and compare: Bernini's gold, coloured marble and theatre against Borromini's white walls and pure geometry. Both are free; both keep short hours.

## How to get there

1. Metro line A to **Barberini**, then 7 minutes up Via delle Quattro Fontane.
2. From [Palazzo Barberini](https://yesgo.io/italy/rome/palazzo-barberini), 5 minutes.
3. From the [Quirinal Palace](https://yesgo.io/italy/rome/quirinal-palace), 5 minutes along Via del Quirinale.
4. Buses 40, 64, 70 and 170 to Via Nazionale, then 5 minutes.

## Is it worth visiting?

Yes, for anyone interested in architecture: one of the key buildings of the Baroque, free and steps from Palazzo Barberini and the Quirinal. Fifteen minutes does it — but check the hours, as it opens only briefly and closes at midday. Compare it with Bernini's church nearby for the best lesson in Roman Baroque.

## Before you go

Tick off what's ready — your ticks are saved in this browser.

- [ ] Check the (short) opening hours
- [ ] Stand in the middle and look up at the dome
- [ ] Peek into the cloister
- [ ] Find all four fountains
- [ ] Visit Bernini's Sant'Andrea al Quirinale

## Rome's churches: compare and choose

Churches and basilicas in Rome rated by YesGo.

- [Pantheon](https://yesgo.io/italy/rome/pantheon) — YesGo score 82/100 (Yes, go) · 30 min · ≈ €5
- [St Peter's Basilica](https://yesgo.io/italy/rome/st-peters-basilica) — YesGo score 71/100 (Yes, go) · 1 h 30 min · Free; dome ≈ €8–15
- [Sistine Chapel](https://yesgo.io/italy/rome/sistine-chapel) — YesGo score 64/100 (Yes, go) · 30 min · Vatican Museums ticket ≈ €25
- [Archbasilica of St John Lateran](https://yesgo.io/italy/rome/lateran-basilica) — YesGo score 64/100 (Yes, go) · 45 min · Free; cloister ≈ €5
- [Santa Maria Maggiore](https://yesgo.io/italy/rome/santa-maria-maggiore) — YesGo score 62/100 (Yes, go) · 40 min · Free
- [Basilica of St Paul Outside the Walls](https://yesgo.io/italy/rome/st-paul-outside-the-walls) — YesGo score 57/100 (Yes, go) · 45 min · Free
- [Church of the Gesù](https://yesgo.io/italy/rome/church-of-the-gesu) — YesGo score 53/100 (Yes, go) · 30 min · Free
- [Sant'Ignazio](https://yesgo.io/italy/rome/sant-ignazio) — YesGo score 51/100 (Yes, go) · 30 min · Free
- [Santa Maria sopra Minerva](https://yesgo.io/italy/rome/santa-maria-sopra-minerva) — YesGo score 51/100 (Yes, go) · 30 min · Free
- [Piazza del Popolo](https://yesgo.io/italy/rome/piazza-del-popolo) — YesGo score 50/100 (Yes, go) · 30 min · Free
- [Santa Maria in Trastevere](https://yesgo.io/italy/rome/santa-maria-in-trastevere) — YesGo score 50/100 (Yes, go) · 30 min · Free
- [Mouth of Truth](https://yesgo.io/italy/rome/bocca-della-verita) — YesGo score 49/100 (Yes, if nearby) · 20 min · Donation ≈ €2
- [Catacombs of Rome](https://yesgo.io/italy/rome/rome-catacombs) — YesGo score 48/100 (Yes, if nearby) · 1 h 30 min · ≈ €10–12 with guide
- [San Pietro in Vincoli](https://yesgo.io/italy/rome/san-pietro-in-vincoli) — YesGo score 48/100 (Yes, if nearby) · 20 min · Free
- [San Luigi dei Francesi](https://yesgo.io/italy/rome/san-luigi-dei-francesi) — YesGo score 47/100 (Yes, if nearby) · 20 min · Free
- [San Carlo alle Quattro Fontane](https://yesgo.io/italy/rome/san-carlo-alle-quattro-fontane) — YesGo score 46/100 (Yes, if nearby) · 20 min · Free
- [Santa Maria della Vittoria](https://yesgo.io/italy/rome/santa-maria-della-vittoria) — YesGo score 46/100 (Yes, if nearby) · 20 min · Free
- [Tempietto](https://yesgo.io/italy/rome/tempietto) — YesGo score 45/100 (Yes, if nearby) · 20 min · Free
- [Santa Sabina](https://yesgo.io/italy/rome/santa-sabina) — YesGo score 45/100 (Yes, if nearby) · 20 min · Free
- [Trastevere](https://yesgo.io/italy/rome/trastevere) — YesGo score 44/100 (Yes, if nearby) · 2 h · Free
- [Baths of Diocletian](https://yesgo.io/italy/rome/baths-of-diocletian) — YesGo score 42/100 (Yes, if nearby) · 1 h · Basilica free; museum ≈ €10–12
- [Basilica of San Clemente](https://yesgo.io/italy/rome/san-clemente) — YesGo score 39/100 (Yes, if nearby) · 1 h · Upper free; excavations ≈ €10–12

## Trevi and the Quirinal

The Trevi Fountain in the morning, up to the Quirinal, then San Carlo alle Quattro Fontane and Palazzo Barberini.

1. [Trevi Fountain](https://yesgo.io/italy/rome/trevi-fountain) — YesGo score 79/100 (Yes, go) · 20 min · Free; basin €2
2. [Quirinal Palace](https://yesgo.io/italy/rome/quirinal-palace) — YesGo score 50/100 (Yes, go) · 1 h 15 min · Square free; tours by booking
3. [San Carlo alle Quattro Fontane](https://yesgo.io/italy/rome/san-carlo-alle-quattro-fontane) — YesGo score 46/100 (Yes, if nearby) · 20 min · Free
4. [Palazzo Barberini](https://yesgo.io/italy/rome/palazzo-barberini) — YesGo score 37/100 (Yes, if nearby) · 2 h · ≈ €15

## Don't mix it up

The Four Fountains crossroads isn't Bernini's Fountain of the Four Rivers on Piazza Navona. San Carlo alle Quattro Fontane isn't San Carlo al Corso, the large church on Via del Corso.

## Tips

- View the dome from the centre.
- Hours are short — check ahead.
- Bernini's church nearby makes a great comparison.
- Three obelisks line up from the crossroads.

## Questions

### Who built San Carlo alle Quattro Fontane?

Francesco Borromini, in 1638–1641; the façade in 1665–1667.

### Is it free?

Yes.

### What is it famous for?

Its undulating façade and oval dome coffered with crosses and polygons — a Baroque masterpiece.

### Where is it?

At the Quattro Fontane crossroads, Via del Quirinale 23, 7 minutes from Barberini metro.

### What are the Four Fountains?

Four 16th-century corner fountains — the Tiber, the Arno, Diana and Juno.

## How we checked

History, architecture and fountains from English Wikipedia. Opening hours are short and change; we couldn't confirm them with an official source — hence the 'checking' badge.

## Sources

- English Wikipedia, San Carlo alle Quattro Fontane and Quattro Fontane

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