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Venue

Postal address : 61 avenue de l’Observatoire, F-75014 PARIS
Pedestrian and vehicle access : 77 avenue Denfert-Rochereau, 75014 Paris
Telephone : +33 1 40 51 22 21 - Fax : +33 1 43 54 18 04

Paris Observatory is in the 14th district of Paris

Coordinates
Longitude : 2°20’ Est ▪ Latitude : 48°50’ North

The meeting will be principaly held in the historical Salle Cassini, located under the great telescope of the observatory (point (1) in the map above).

Bus access
Lines 38, 83 ou 91 stop off at Observatoire-Port Royal
Lines 38, 68 ou 88 stop off at Denfert-Rochereau

Metro access
Lines 4 et 6 : stop off at Denfert-Rochereau station

RER access (Regional Express Train)
RER B : stop off at Denfert-Rochereau ou Port-Royal stations

From Roissy airport
Take the RER B stop off at Denfert Rochereau station

From Orly airport
Take the OrlyVal train change at Antony for the RER B in the direction of Paris, stop off at Denfert-Rochereau

Paris metro system –

Paris recently switched the metro ticketing system and does not use paper tickets anymore. Instead, you now have two ways to obtain a metro ticket:

  • Using your smartphone if it is NFC enabled
    • Install the “Ile de France mobilité” App 

https://www.iledefrance-mobilites.fr/en/titres-et-tarifs/supports/telephone

  • Follow instructions to purchase tickets
  • Buying a “Navigo Easy” travel Pass:
    • Navigo Easy pass can be bought for 2 € on any ticket machine, at RER and metro stations, or from booth with station staff.
    • The pass then need to be loaded with the desire tickets

For both options:

  • You need one pass per person (it is not possible to validate 2 tickets on the same pass if you travel with someone)
  • Pass/Phone need to be validated when entering the metro/bus/tram by putting in contact with the NFC machines at the entrance. A pass not validated would result in a fine in case of control, even if it is loaded with tickets.
  • You can load:
    • Metro-Train-RER tickets
    • Bus-Tram tickets
    • One day unlimited pass
    • Paris-Airport tickets
    • Note that since the changes in the ticketing system, metro tickets are now also valid on the whole extended RER (rapid express train) and regional train at a single price of 2.50€.
    • A single ticket allows you to use several metro/train/RER lines or Bus/Tram lines in a row (but you have to validate it each time). However, any connections between metro/RER and bus/tram requires a new ticket as both systems are independants.

For navigating Paris metro system:

            Metro is a great way to travel safely, efficiently and cheaply through Paris. Waiting time for a metro is usually no more than a few minutes. Several apps exist for navigating the system, both officials are the IDF mobilit and the RATP ones. Google map and City Mapper also work.

https://maps.app.goo.gl/HbrKFugospPNMMEy9
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