The neo-classical Royal Palace lies right at the end of Karl Johann Gate and makes for a very impressive sight. The park, which surrounds the palace, is a popular picnic and sunbathing spot thanks to its grassy areas and majestic trees. Every day at 1:30 pm the guard changing ceremony takes place.

Port Zante is the largest cruise port in Saint Kitts and Nevis. The pier area consists of three separate piers designated for cruise ships. The pier area can currently accommodate up to four large cruise ships simultaneously. On busy days, when more than four ships arrive, the ships without a pier either use the cargo port or tender passengers ashore. The Port terminal includes various amenities such as restaurants, shops, cafes and a car park. The port's location could not be better, as it is only a short ten-minute walk to downtown Basseterre or "The Circus" as the locals call it. There is a duty-free shopping area where passengers can buy different goods tax-free. However, in order to benefit from this duty-free rates, local vendors might ask for a proof of non-residence such as a cruise ship card, a foreign driver's license, or a passport.

Palazzo Madama is one of the historic buildings of Piazza Castello, together with the Royal Palace. The layers of history that from this palace are extraordinary. At the beginning of the first century BC, the site of the palace was occupied by a gate in the Roman city walls. The two restored towers still testify to this original nucleus. The back of the palace looks like a medieval stronghold, while the ornate facade was added by the Savoy family to better match the overall look of the square. Today it houses the Museum of Ancient Arts, with its impressive collection of paintings.