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Hidden gem4th – 7th c. ADTicketed

Archaeological site of St. Pierre Cathedral, Geneva

Site archéologique de la cathédrale Saint-Pierre, St. Pierre Cathedral

church · Geneva, Switzerland

What it is
Under St. Pierre Cathedral in Geneva's old town lies an archaeological site that shows the remains of the churches that stood here before the present building, the oldest from the end of the 4th century, and beneath them pre-Christian traces, including the grave of an Allobrogian chief.
What you’ll see
The visit goes down under the cathedral. Geneva Tourism describes the remains of earlier churches, the oldest going back to the end of the 4th century, and, below them, pre-Christian traces of occupation of the hill: wells, areas for processing grain and an Allobrogian tomb, presented with modern museum techniques.
Worth the trip?
Yes. It is in the middle of Geneva's old town, open every day, and it takes you through the hill's long history in one visit, with a free audio guide.
Getting there & cost
The site is at Cour de Saint-Pierre 6 in Geneva (Geneva Tourism); its entrance is a door on the rue du Cloître, on the north side of the cathedral (Wikimedia Commons).Ticketed · CHF 8 (about €8.55) for adults · checked 7 October 2026Hours, tickets and parking
A skeleton lying in an excavated grave cut into a layered earth floor, in a dim underground space with a rough stone wall and a tall standing stone behind.
The tomb of an Allobrogian chief under the cathedral. · Photo: RomanDeckert · CC BY-SA 4.0 · Wikimedia Commons
A small arched wooden door in the pale stone wall of the cathedral, beside an iron railing, with a red and grey sign on a post reading "Site Archéologique".
The entrance to the archaeological site, on the rue du Cloître. · Photo: MHM55 · CC BY-SA 4.0 · Wikimedia Commons
A long mosaic floor in a dim underground hall, laid in geometric panels of interlace, chequers and a rosette in dark and pale stones, patchy and worn in places, with a low rubble wall along one side.
Mosaic floor of the bishop's hall. · Photo: Benjamín Núñez González · CC BY-SA 4.0 · Wikimedia Commons

What is there today

The visit goes down under the cathedral. Geneva Tourism describes the remains of earlier churches, the oldest going back to the end of the 4th century, and, below them, pre-Christian traces of occupation of the hill: wells, areas for processing grain and an Allobrogian tomb, presented with modern museum techniques. Photographs on Wikimedia Commons show the walls of the early “northern cathedral”, built in alternating courses of squared blocks and river stones, and the skeleton of the Allobrogian chief in his grave, a tumulus the file’s description dates to around 120 BC.

The cathedral above is a later building: Pleiades notes that the present building was begun around 1150, on the site of a church first built in the 4th century.

Is it worth the trip?

Yes. It is in the middle of Geneva’s old town, open every day, and it takes you through the hill’s long history in one visit, with a free audio guide. The Roman and late-antique part is the early churches rather than Roman buildings in the usual sense, so come for the long story under one roof rather than for temples or baths.

Getting there

The site is at Cour de Saint-Pierre 6 in Geneva (Geneva Tourism); its entrance is a door on the rue du Cloître, on the north side of the cathedral (Wikimedia Commons). The bus stops Taconnerie and Cathédrale are mapped within about 70 m (OpenStreetMap). It opens daily 10.00–17.00, last entry 16.30 (the operator, Geneva Tourism). Entry is CHF 8 (about €8.55), or CHF 4 for children and pensioners, with a free audio guide in French, English or German (Geneva Tourism, read 7 October 2026 — check before travelling).

Visiting details

Opening hours
Daily 10.00–17.00, last entry 16.30.
Tickets
CHF 8 (about €8.55) for adults; CHF 4 (about €4.30) for children and pensioners; a free audio guide in French, English or German comes with the ticket.

Before you go

  • The entrance is on the north side of the cathedral, a door on the rue du Cloître (Wikimedia Commons).

Hours and prices checked 7 October 2026 on the operator's own site. Confirm before travelling.

History

The first church on the site was built in the 4th century; the present cathedral was begun around 1150 and became a Protestant church at the Reformation (Pleiades). The national inventory lists the cathedral, the Maccabees chapel and the archaeological site with its museum as a cultural property of national significance, dated from the Roman period through the Middle Ages (KGS 2443).

Nearby

  • Three fluted stone columns on a low stone platform under chestnut branches, two tall ones carrying a weathered stone block across their tops and a shorter broken one beside them, with the lake and distant hills behind.

    Photo: Odrade123 · CC BY-SA 3.0 · Commons

    21 km · city · Nyon District, Vaud

    Noviodunum

    The modern town covers the Roman one entirely, and most of the remains found have been covered again once archaeologists had recorded them (fr.wikipedia).

Straight-line distances.

Sources

Every fact on this page comes from the records below, each used under the licence noted.

SourceLicence
Pleiades 157797874CC BY
OpenStreetMap way/397737238ODbL
KGS inventory 2443 — Cathédrale St-Pierre et Chapelle des Macchabés, avec site archéologique et musée (BABS)licence not recorded
Site archéologique de la cathédrale Saint-Pierre (the operator)licence not recorded
Geneva Tourism — Site archéologique de la cathédrale Saint-Pierrelicence not recorded