San Lorenzo, Florence

393: consecrated by Saint Ambrose, and the city's cathedral for three centuries

The first church on this site was consecrated in 393 by Saint Ambrose, bishop of Milan, on ground then outside the Roman walls. For about three hundred years it served as the cathedral of Florence, until that role passed to Santa Reparata under what is now the Duomo. An eleventh-century Romanesque basilica replaced the first church, and it is that building the Renaissance one was raised on.

1419: Giovanni di Bicci pays, Brunelleschi builds

In 1419 Giovanni di Bicci de' Medici, the banker who founded the family's fortune, funded a complete rebuild and gave the job to Filippo Brunelleschi. The Old Sacristy was the only part finished in Brunelleschi's lifetime; the nave went up slowly, with changes, and the church was completed in 1459. What Brunelleschi established here — a flat-ceilinged basilica measured out in a single repeating module, grey pietra serena framing white plaster — became the grammar of Florentine church interiors for a century.

San Lorenzo was also the family's burial church. The principal Medici from Cosimo il Vecchio to Cosimo III lie in this complex, in the crypt, under the pavement and, from 1520 onward, in the New Sacristy that Michelangelo built on the other side of the transept and that is now entered as the Medici Chapels from the square behind.

The brick you see was never meant to be seen. In 1518 Pope Leo X, a Medici, commissioned Michelangelo to face the church in Carrara marble; he spent three years in the quarries and on the model and the contract was cancelled with nothing built. The wooden model survives at Casa Buonarroti, a few streets east, and it is the only way to know what was intended.

Michelangelo did build one façade here: the inner one, on the entrance wall, with three doors, garlanded pilasters and a balcony carried on two Corinthian columns. Turn round after you go in and it is above your head. In 2007 the marble design was projected onto the brick front for a few evenings as an experiment; nothing has been decided since, and the church has now stood unfaced for more than five centuries. The freestanding campanile beside it dates from 1740.

If the argument about unfinished Michelangelo interests you, the four unfinished Prisoners at the Accademia make the other half of it.

The nave: Brunelleschi's module in grey and white

Two rows of Corinthian columns carry round arches down a flat-ceilinged basilica, everything articulated in pietra serena against white plaster. The proportions are all one measurement repeated — the width of a bay, the height of a column, the span of an arch — and the effect is of a building you can read rather than one you have to feel your way through. Stand at the west end and look down the nave before you start on the individual works; that view is the reason the church matters architecturally.

Donatello's two bronze pulpits, his last works

Two bronze pulpits stand in the nave, crowded with figures in violent relief: the Passion on one, the Resurrection on the other. Donatello was in his late seventies and died before they were finished, leaving pupils to complete and mount them. They are nothing like the serene Donatello of the Bargello — the surfaces are rough, the perspective is forced, and the crowds press forward out of the frame.

Most people walk past them looking at the ceiling.

Bronzino, Filippo Lippi and Rosso Fiorentino

Bronzino's Martyrdom of Saint Lawrence, painted between 1565 and 1568, fills a wall of the north aisle with a crowded, cold, grid-like composition around the gridiron the saint was killed on. Filippo Lippi's Annunciation hangs in the Martelli Chapel, and Rosso Fiorentino's Marriage of the Virgin of 1523 is on the same side — three paintings that cover a century of Florentine art without leaving the building.

The Old Sacristy: Brunelleschi's cube, Donatello's reliefs, Verrocchio's tomb

The Sagrestia Vecchia off the left transept is the earliest completed Renaissance interior in Florence: a cube of white wall and grey stone with a hemispherical dome, built and finished while Brunelleschi was alive. Donatello made the roundels, the reliefs of the Evangelists and the bronze doors, and the two men reportedly argued about them. Verrocchio's tomb of Giovanni and Piero de' Medici — a porphyry and bronze sarcophagus set into the wall opening — was made in the 1470s, and Desiderio da Settignano's marble tabernacle is nearby in the church.

The old and new sacristies were meant to answer each other across the transept. You can only see one of them on this ticket; the other is the New Sacristy, begun in 1520, which belongs to the Medici Chapels and their separate entrance.

The cloisters, the treasury and the crypt

The €9 ticket also opens the fifteenth-century cloister — the quietest space in the quarter, and the way through to the library door — the Museo del Tesoro with the church's reliquaries and vestments, the crypt where Cosimo il Vecchio lies under the pavement of the church he paid for, and the monumental undergrounds. Twenty minutes down there is what separates a proper visit from a walk through the nave.

You reach the Biblioteca Medicea Laurenziana from the fifteenth-century Canons' Cloister of the basilica, up a flight of stairs on the far side. The vestibule at the top is Michelangelo's, and it is deliberately wrong: columns recessed into the wall instead of standing in front of it, brackets that carry nothing, a room far taller than it is wide, all in grey pietra serena. Filling most of the floor is the staircase — three flights of oval steps that pour out of the reading-room door like something liquid, designed by Michelangelo and built by Bartolomeo Ammannati in 1559, twenty-five years after Michelangelo had left Florence.

Through the door the Reading Room is the opposite: long, low, horizontal, lit from both sides, with rows of wooden benches that are also the desks and the bookcases, and Medici stained glass in the windows. The nineteenth-century Tribuna d'Elci at the end holds a collection given to the library in 1818.

The monumental area costs €5 (about $6) and opens Monday to Friday 10:00–13:30 with last admission at 13:00. Tickets are sold on site Monday to Friday between 10:00 and 13:00, or through Vivaticket, whose page the library does not name. A guided visit runs on Thursdays from 15:00 to 17:00 at €9 for a maximum of 25 people, with under-14s free when accompanied by two paying adults. It closes on Saturdays, Sundays, public holidays and 10 August.

• Entered from the Canons' Cloister of the basilica, not from the street
• €5, Monday–Friday 10:00–13:30, last admission 13:00
• Guided visit Thursdays 15:00–17:00, €9, maximum 25 people
• Closed Saturdays, Sundays, holidays and 10 August

The basilica opens Monday to Saturday from 10:00 to 17:30 with last entry at 16:30, and closes on Sundays, 1 January, 6 January and 10 August, the feast of Saint Lawrence. The library opens Monday to Friday mornings only. The chapels behind open Tuesday to Sunday 08:15–18:50 and close on Mondays.

So the complex has no single day when everything is open except Tuesday to Friday, and the order that works is fixed by the library's short hours: library at 10:00, basilica straight afterwards, chapels any time that is not a Monday. Trying it the other way round costs you the library entirely.

One warning on published hours. The old operamedicealaurenziana.org pages still print 10:30–16:00 with last entry at 15:00 for the basilica; the parish's own site, sanlorenzofirenze.it, gives 10:00–17:30 with last entry 16:30, and that is what we have used. If the two ever matter to your plan, the parish site is the one to check on the morning.

Mass times are not stated on the pages we fetched, so we print none. Visiting stops during services, and 10 August is a full closure for the feast.

• Tuesday to Friday: everything open — library 10:00, basilica after, chapels any time
• Saturday: basilica and chapels open, library closed
• Sunday: chapels only — the basilica is shut
• Monday: basilica and library open, chapels shut

The basilica door is on Piazza San Lorenzo 9, behind the market stalls that fill the square every day. The chapels are entered from Piazza di Madonna degli Aldobrandini, round the left side of the building. The library is inside the basilica's cloister, so you need to be through the church ticket office area to reach it.

It is three minutes from Mercato Centrale, five from the Duomo down Borgo San Lorenzo, and about ten from Santa Maria Novella station. A single urban bus or tram ticket costs €2 (about $2.30) and lasts 90 minutes under the fares in force from 1 August 2026, or €3 bought from the driver.

Palazzo Medici Riccardi is four minutes north and worth knowing about for its Chapel of the Magi; note that it closes on Wednesdays and that its entrance moved to Via de' Ginori 2 on 27 August 2026. Cars are pointless here: the ZTL runs Monday to Friday 07:30–20:00 and Saturday 07:30–16:00, and getting around Florence covers the alternatives.

• Basilica: Piazza San Lorenzo 9, behind the stalls
• Chapels: Piazza di Madonna degli Aldobrandini, round the back
• Library: through the basilica's Canons' Cloister
• Urban bus or tram single €2, valid 90 minutes; €3 on board

This is a mid-morning complex, not an early one: nothing here opens before 10:00 except the chapels. The efficient version is chapels at 08:15, library at 10:00, basilica at 11:00, lunch at Mercato Centrale three minutes north, and the Duomo five minutes away in the afternoon — three tickets and a meal inside four hours, in a quarter most itineraries reduce to a market photograph.

If you are choosing between churches rather than stacking them, every Florence church with hours and prices sits in one table, and the three-day Florence itinerary places this morning against the timed museum tickets. The full attractions list covers everything else in the centre, and the rest of this Florence city guide starts from the homepage.