1. The National Palace of Culture (Palacio Nacional de la Cultura) in Managua, Nicaragua is a historic building that serves as a cultural center and museum. It was originally built in 1931 and has been renovated and expanded several times since then. The architecture of the building is a mix of neo-classical and neo-colonial styles.

Inside the National Palace of Culture, visitors can see exhibitions on Nicaraguan history, art, and culture. There are also temporary exhibitions that showcase local and international artists. The building itself is an impressive sight, with grand halls, marble floors, and ornate decorations.

2. The working hours of the National Palace of Culture may vary, so it is recommended to check their official website or contact them directly for up-to-date information. Unfortunately, I do not have a phone number available at the moment.

3. Entrance to the National Palace of Culture is usually free of charge, but there may be special exhibitions or events that require a ticket. The palace is located in the center of Managua, so it is easily accessible by public transportation or taxi. It is a must-see attraction for anyone interested in Nicaraguan culture and history.