1. Old Town Cartagena is a historic walled section of the city of Cartagena, Colombia. It was founded in 1533 and was an important trading port for the Spanish Empire. The ancient architecture of the town is a mix of Spanish Colonial, Baroque, and neoclassical styles. The town is filled with colorful buildings and narrow cobblestone streets. Visitors can explore numerous museums, art galleries, shops, restaurants, and cafes. One of the main attractions of the Old Town is the Castillo San Felipe de Barajas, a fortress built by the Spanish in the 17th century to protect the city from pirates and invaders.

2. The working time for the Old Town Cartagena varies depending on the attractions and businesses present. Generally, businesses operate from 10 am to 8 pm, while some attractions may have different working hours. If you need specific information about any attraction, it is best to check their website or call them if a phone number is available.

3. There is no entrance fee to enter the Old Town Cartagena, but there may be fees for specific attractions. Visitors can walk around the Old Town or take a guided tour, which may cost around $20-30 per person. Transportation options include taxis, buses, or rental cars. The best way to explore the Old Town is by walking as it is a pedestrian-friendly area.