1. The 4th arrondissement is located on the right bank of the Seine River in central Paris. It is home to many historic and cultural sites, including the Notre-Dame Cathedral, the Pompidou Center (a modern art museum), the Hôtel de Ville (City Hall), and the Place des Vosges (one of Paris’s oldest and most beautiful squares). The neighborhood is known for its narrow, winding streets, medieval architecture, and charming cafes and shops.

2. Hours of operation and phone numbers vary depending on the specific attractions you are interested in visiting. Generally, most attractions are open daily from around 10am to 6pm. City Hall can be reached at +33 (0)1 42 76 40 40.

3. Tickets and transportation information will also depend on the attraction you plan to visit. For example, admission to the Notre-Dame Cathedral is free, but there may be a fee for climbing the towers. The Pompidou Center charges admission, and tickets can be purchased in advance online or in person at the museum. Public transportation in Paris is efficient and convenient, with metro and bus lines throughout the city. Visitors can purchase single tickets, day passes, or multi-day passes to access public transportation.