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Crypt of Our Lady Basilica (Boulogne-sur-Mer, France)

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General information about the Crypt of Our Lady Basilica

The largest crypt in France is the crypt in the Basilica of Our Lady in Boulogne-sur-Mer: no less than 1,200 m² (1). It reopened in 2015 after extensive renovation work. The first remains on display date back to the Roman period (Roman barracks). There are many murals to see: around 160, many dating from the 1800s. There is also an exhibition of ancient religious objects. Tourists looking for added value should not miss this: a highlight for the region and yet less known to the general public. Although, everything is relative: they already receive around 45,000 visitors per year (2019 figures).

Some practical points: admission is paying (5 EUR in July 2022, special rates for certain categories, closed on Mondays). The site has been made accessible to wheelchair users. This is a real plus.

Visitor tips Crypt of Our Lady Basilica

General tips:
1) if you are looking for other nearby attractions, consult our Tourist map of Top.Vlaanderen.
2) You can consult our overview lists: by category ( e.g. timeline, size, ...) or by region
3) You can also always consult tourist services: see our overview of tourist services

Tip: Check out our page on Boulogne-sur-Mer : you can combine the visit to this crypt with lots of other beautiful and interesting things!

(1) "The largest crypt in France" is what they themselves claim. However, if you include the modern, contemporary crypts, this one of the much more recent Neo-Gothic Cathedral in Lille is actually the largest. According to the latter, even one of the largest in Europe. It covers a whopping 2,500 square meters. 'Tis just a factoid, but right is right 😉.

Geographical information

Address: Rue de Lille, Boulogne-sur-Mer, Hauts-de-France, France
Geographic coordinates:
Google Maps: Latitude = 50.7260676 – Longitude = 1.6144893
Open Street Maps: Latitude = 50.726184 – Longitude = 1.615228
Altitude h = 64 m
Location of the Crypt of Our Lady Basilica on:
Tourist map of Top.VlaanderenGoogle MapsOpenStreetMap.
Route to the Crypt of Our Lady Basilica: Route via Google Maps

Meteo

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Saint-Martin-Boulogne, FR
09:02, 01/17/2026
weather icon 8°C
Low: High:
cloudy
Sunrise 08:47
Sunset 17:19
Humidity 94 %
Pressure 1014 mb
Wind 15 Km/h SE
Wind Gust 29 Km/h
UV Index 0
Precipitation 0 mm
Clouds 100%
Rain Chance 0%
Visibility 10 km
Day Condition Temperature Precipitation Rain Chance Wind Humidity Pressure
Today 22:00
weather icon cloudy
7° | 8°°C 0 mm 0% 10 Km/h 93 % 1020 mb
Tomorrow 22:00
weather icon cloudy
4° | 9°°C 0 mm 0% 10 Km/h 92 % 1020 mb
Mon Jan 26 10:00 p.m.
weather icon cloudy
2° | 7°°C 0 mm 0% 11 Km/h 91 % 1020 mb
Tue Jan 26 10:00 p.m.
weather icon slightly cloudy
4° | 9°°C 0 mm 0% 11 Km/h 91 % 1020 mb
Wed Jan 26 10:00 p.m.
weather icon partly cloudy
2° | 9°°C 0 mm 0% 22 Km/h 89 % 1012 mb
1 to 8 of 0 results
Hour Condition Temperature Precipitation Rain Chance Wind Humidity Pressure
Today 10:00
weather icon cloudy
8° | 8°°C 0 mm 0% 9 Km/h 93 % 1016 mb
Today 13:00
weather icon cloudy
9° | 10°°C 0 mm 0% 10 Km/h 90 % 1016 mb
Today 16:00
weather icon cloudy
10° | 10°°C 0 mm 0% 9 Km/h 88 % 1017 mb
Today 19:00
weather icon cloudy
8° | 8°°C 0 mm 0% 7 Km/h 90 % 1019 mb
Today 22:00
weather icon cloudy
8° | 8°°C 0 mm 0% 10 Km/h 92 % 1020 mb
Tomorrow 01:00
weather icon cloudy
7° | 7°°C 0 mm 0% 8 Km/h 91 % 1020 mb
Tomorrow 04:00
weather icon cloudy
7° | 7°°C 0 mm 0% 10 Km/h 92 % 1020 mb
Tomorrow 07:00
weather icon cloudy
6° | 6°°C 0 mm 0% 10 Km/h 90 % 1019 mb
1 to 8 of 0 results

Starry sky above the crypt of Our Lady Basilica

Internet information from and about Crypte Basilica of Our Lady

Internet media of the Crypt: Website (Practical information)
Wikipedia page about the basilica: NLFREN
Website of Boulogne-sur-Mer on top.vlaanderen.

Tourist Office "Boulonnais au Top":
WebsiteFacebookInstagram
Tourist Office "Pas-de-Calais Tourisme":
WebsiteFacebookInstagram
Tourist Office "Groupes Pas-de-Calais":
Website

Our photos of the Crypt of Our Lady Basilica

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