How much revenue does tourism bring in? 
 The historic Walled City is administered by the Intramuros administration, whereas the Manila North Harbor is managed by the Philippine Ports Authority. 
 Can you tell me about Manila History? 
 How is the tourism there? 
 I'm afraid I don't have that information with me: however I can tell you that the total revenue of the City of Manila amounts to 12.8 billion worth of their currency.
The historic Walled City is administered by the Intramuros administration, whereas the Manila North Harbor is managed by the Philippine Ports Authority.