The Paris Metro is a rapid transit system serving the city of Paris, France. It consists of 16 lines and over 300 stations, making it one of the densest metro systems in the world. The network is known for its efficiency, connecting various neighborhoods and key landmarks, including the Eiffel Tower and Louvre Museum. Opened in 1900, the Paris Metro is characterized by its iconic Art Nouveau entrances and unique signage. It operates daily, providing millions of rides each year. The system is an essential part of daily life for Parisians and a popular choice for tourists exploring the city.