Mandeville is a city located in St. Tammany Parish, Louisiana, United States. It is situated on the north shore of Lake Pontchartrain and is part of the New Orleans metropolitan area. Mandeville is known for its scenic beauty, with many oak trees and waterfront views. The city has a vibrant downtown area with shops, restaurants, and art galleries. It also has a strong sense of community, with many community events and festivals throughout the year. Outdoor activities such as boating, fishing, and hiking are popular in Mandeville due to its proximity to the lake and nearby nature reserves.