The city spreads across both banks of the Seine: the right bank (rive droite), to the north, and the left bank (rive gauche), to the south. In the middle of the river are two islands, the Île de la Cité, where Notre-Dame and the Sainte-Chapelle are located, and the Île Saint-Louis.
The city is divided into 20 arrondissements, a word that means administrative district. They are numbered from 1st to 20th in a spiral, starting from the center, near the Louvre, clockwise. The number appears on street signs and at the end of the postal code: 75001 is the 1st, 75020 is the 20th. Knowing the arrondissement helps understand where the hotel or museum is.
To get around, the metro has a station a few minutes' walk from almost every point in the city. The RER, a regional express train identified by letters (A, B, C, D and E), crosses Paris and goes farther: the RER B reaches Charles de Gaulle airport, the RER C reaches Versailles and the RER A reaches Disneyland Paris. From the main train stations, the gares, depart the TGV, high-speed trains that connect Paris to Lyon, Marseille, Bordeaux, Strasbourg, Lille and other cities.
In winter it gets dark early, in the late afternoon; in summer daylight extends late into the night. Lunch is served around 12:00–14:00 and dinner from about 19:30, and many restaurants close the kitchen between the two.
This destination brings together 1 city: Paris.