The first Paris Metro ran on July 19, 1900. Since then the system has expanded to 380 stations on 16 different lines, servicing the entire city. You’ll find a Metro station within 500 meters, no matter where you are in the city.
The famous Paris Metro is a very convenient, cheap and efficient way to get around. There are frequent trains during the day, and the last metros leave around 12:30am. A one-way fare is €1.30 Euros. You can also buy a book of ten tickets for 9.30 or a Paris Visite 1,2,3 or 5 day pass which is also valid on city buses, and gets you into first class on the SNCF trains which serve the suburbs. Price for the Paris Visite varies according to the number of zones and days.