Built in neoclassicist style with a square central tower, the town hall is one of the finest examples of colonial architecture around. It's still in use. When the doors are open, make sure to have a look inside. There's even some information on the building's history available for visitors.
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Igreja de Nossa Senhora da Graça
The city's cathedral was constructed in 1902 in classicist style.
A square in the central old town. Albuquerque was a governor who was passionate about card playing; therefore, each of the four corners of the square is marked by a suit.
Palácio Presidencial
Built in the late 19th century as the residence of the Portuguese governor, nowadays it is the presidential palace. It has lately been renovated with financial help from China. Other governmental buildings are located nearby.
Palácio da Justiça
The supreme court is a pretty building at the Praça Alexandre Albuquerque. It may be possible to visit it on the inside too.
A monument dedicated to Diogo Gomes, the explorer of the islands. It is located at the south of the plateau, and there are great views from there to Praia do Gamboa and Ilhéu de Santa Maria.