Located next to the Ruins of St Paul, Monte Fort is probably the highest point in Macau, and provides some amazing views of the city. The fort was a defensive installation by the portuguese, and canons are jotted around the fort. The top has an amazing garden also - and given the time of the year, lots of flowers!
In a recent renovation, the Macau Musuem was added to the fort - a a great exploration on the combined history of the West and China - starting with a short history summary, trade, construction, science developments and some cultural fusion. It's a great primer on the shared history.