The 4th is a very centrally located arrondissement, right between the Châtelet and Bastille areas, two of Paris' main transportation metro, RER and bus hubs.
By car
Being such a touristy district it is very hard to find parking spaces. It's much easier to use the Metro.
By bus
Unlike the metro, buses can be a great way of moving around and seeing the city's landscape, although you risk being caught in traffic. The most useful lines are 70, 72 and 74, which stop at the Hôtel de Ville, and lines 75 and 76, which run through Rue de Rivoli.
The neighbouring Châtelet and Bastille stations are also served by the Noctilian night bus, running from half past midninght to 5.30 am. Lines 33, 34 and 132 run between them with no intermediate stops, but there are many others arriving and leaving from both to several destinations around town.
By Metro
Several subway stations on lines 1, 4, 7 and 11 dot this area and are convenient for exploring its attractions.
Station Hôtel de Ville on Ligne 1 La Defense/Chateau de Vincennes and Ligne 11 Chatelet/Mairie des Lilas - Access from near the junction of Rue de Renard and Rue de Rivoli.Station Cité on Ligne 4 Porte d'Orleans (General Leclerc/Porte de Clignancourt) - Access off the Boulevard du Palais infront of Palais de Justice on the Ile de Cité.Station St. Paul on Ligne 1 La Defense/Chateau de Vincennes - Access off the Rue de Rivoli.Station Rambuteau on Ligne 11 Chatelet/Mairie des Lilas - Access from near the junction of Rue de Renard and Rue Rambuteau.Station Pt. Marie on Ligne 7 Villejuif - Louis Aragon / Mairie d'Ivry/La Courneuve - 8 mai 1945 - Access from Quai de l'Hotel de VilleStation Sully Morland on Ligne 7 Villejuif - Louis Aragon / Mairie d'Ivry/La Courneuve - 8 mai 1945 - Access near the junction of Boulevard de Henri IV and Quai des Celestins.