1. Guadalajara Historic Center, also known as Centro Histórico, is the oldest part of the city of Guadalajara, Mexico. It is known for its charming colonial architecture, historic landmarks, and vibrant cultural scene. The center is home to numerous landmarks, including the Guadalajara Cathedral, the Government Palace, the Degollado Theater, and the Rotonda de los Hombres Ilustres. The area is filled with beautiful squares, like Plaza de Armas and Plaza de la Liberación, where locals and visitors gather to enjoy the vibrant atmosphere.

2. The working hours of the Guadalajara Historic Center can vary depending on the specific attraction or establishment. However, most of the shops, restaurants, and attractions in the center are open from 10 am to 7 pm from Monday to Saturday. Some attractions may have different hours of operation, so it is advisable to check the specific place you plan to visit in advance. It is recommended to contact the Guadalajara Tourism Office at +52 33 3030 3892 for more information.

3. The Guadalajara Historic Center is free to enter and explore. However, some specific attractions may have an entrance fee. The Guadalajara Cathedral, for example, allows free entry for visitors but charges for entrance to its towers. The ticket prices may vary depending on the attraction. As for transportation, the center is easily accessible by public transportation, including buses and taxis. There are also ample parking spaces available for those traveling by car.