The positive aspects concern the widespread coverage of the city and the first suburbs: by purchasing the ticket that covers areas 1 to 5 it is also possible to use it to/from CDG airport (RER B) or Versailles. The negative ones refer to the very poor cleanliness (we even saw a mouse running around) and the many non-functioning treadmills which require you to cover long distances on foot. The art decaux signs are very beautiful and characteristic

The Paris Metro covers a vast region of the city and practically all the famous tourist attractions, with the exception of the Palace of Versailles, accessible via train (RER). Metro cars vary (old or new) according to the line's installation date, but are normally very full on weekdays. The paper single ticket (Ticket t+) must not be thrown away after passing through the turnstile, under penalty of a fine in the event of inspection. The Navigo Easy card can be topped up and purchased at lower prices.

5 out of 5! The stations were numerous and relatively clean. The trains are on time and if they are not then you receive notifications in FR, EN and SP. There were some times when we could not open the door with our ticket and the security agent was helpful, and fluent enough to communicate well! They usually just waved us through! The people on the metro would often give up their seat for my wife.

The good bits: It's just over €2.15 for a single fare or €6.27 for a day ticket. It's a logical layout and easy to use Clean trains Wasn't ever too busy, even in the rush hours The bad bits: There hasn't been any investment I can see, same old ticket machines and too few of them. They also have illogical differences so not always straight forward to use them either. Stupid gates in and out which are useless if you have luggage. The exit gates just open and some stay open so people nip in without paying and because people are doing that there are spot checks for tickets going on. We saw plenty that caused delays, even on the staircases of the elevated stations, which wasn't very safe. I hate the fact you get to a Metro station and sometimes the connection between metro lines is like walking underground for miles. Not many lifts and escalators either so again, luggage can be painful. Signage is sometimes really dumb. Anyone saying this is better than the London Underground clearly hasn't used it much or with luggage. The London Underground isn't perfect but it's light years better than this and has been properly invested in. I can also tap in and out on my credit card in London which is a great convenience and there are double width entrance and exit gates for people with luggage. .

6 of us bought the 3 day visitor pass which suited our goal of freedom to metro around the city from our hotel base. When the pass worked the metro was perfect, easy to navigate despite the many stairs at various locations, not too far from any sight we wanted to see in the city center. However, 5 out of 6 of us experienced repeated errors tha the pass would not permit entry after the first day despite keeping the pass in a location where it was not adjacent to a phone or anything else that would perhaps demagnetize it. These issues can occur, but unfortunately the response from the "service center" at the metro station where the error occurred was not as expected. We thought the ticket would be rescanned at the service center to reactivate it or it would be replaced. Instead the variety of responses were "can't help you, go back to the station where you purchased the ticket"; "can't help you at the station where you purchased the ticket, go back to the station that denied entry", "can't help you unless you have the payment receipt that matches the ticket": "can't help you even if you have the matching receipt and ticket"; "can't help you, sometimes the tickets work and sometimes they don't". Only once did a service center replace a ticket and that was the point of original purchase where the agent on duty recognized us as she had issued the tickets the previous day. I would have rated the metro experience much higher as it is truly a great asset to tourists but it was tarnished for us by the technical issues coupled with the lack of customer service.

The subway is certainly the best way to visit the city. It is surprising that at the T2 terminal of CdG airport there is no contactless access to the RER, so it is necessary to buy the ticket at the machines. Then we took the "navigo" card, a sort of prepaid card to top up. The train carriages of some lines need maintenance and above all cleaning.

Very well run metro and RER trains. On time, clean and good stations. Connects easily to all parts of Paris and you never need a taxi/car when you have this wonderful metro. Install the Bonjour RATP app and travel becomes even more easier.

Old decrepit system but it does get you from point A to point B. Would recommend before you use the system that you do lots of research on-line to understand the ins and outs of the system. Would recommend visitors purchase Paris visite pass tickets (each day expires at midnight) over the Navigo travel passes with unlimited rides on the metro, RER, buses. Buy your tickets only from the Metro official booths. Make sure you fill in your name and dates for use and validate your ticket each time you enter train station/bus etc. If you don't do this, be expected to be fined if you are checked. The tickets also get easily demagnetized so don't store them with your phone etc. Know where you need to go before you get in the station. Watch out for pickpocketers!

when i arrived at CDG i purchased my '7 day unlimited metro swipe card' for around $35.00. it is the best decision ever. Their metro system is so well thought of and planned with literally hundreds if not thousands of staff/volunteers all around the transit system...underground and above ground, helping you to get you where you need to go during this super busy olympic time. So, go get your unlimited metro card, save time and money and have more time to enjoy this lovely city.

The Paris metro takes you everywhere in the city of Light and the signs are well displayed. I especially loved the corridors which seem like real mazes under the city. Station exits are generally close to most tourist attractions. And it’s very easy to get there. You can buy tickets online and at all stations in person. There are day passes and weeks. Which is cheaper for tourists. With the tickets you have access to the metro, the RER, buses etc. Get the Navigo pass on Île de France mobility. Physical or electronic card on Apple wallet or other.