Saint Barthélemy was first claimed by France, in 1648. The island was given to Sweden in exchange for trade rights in Gothenburg in 1784 and Sweden founded the Swedish West India Company. Prospering during the Napoleonic Wars, assets were low thereafter, and the island was sold back to France in 1878.
The eventual site of Gustavia was first called Le Carénage after the shelter it provided to damaged ships. According to the archives the name Gustavia appeared between December 28, 1786 and February 9, 1787. Gustavia remains as a reflection of the Swedish period.
Three forts built in the mid- to late 17th century protected the harbour: Oscar (formerly Gustav Adolf), Karl and Gustav. The Saint-Bartholomew Anglican Church on the harbourfront was built in 1855.
The sites of Fort Karl, overlooking Shell Beach south of town, and Fort Gustav, at the base of the lighthouse to the north, are popular with hikers. Fort Oscar, at the tip of Gustavia Peninsula, houses the Gendarmerie. There is a museum at the end of Victor Schoelcher Road on the peninsula. Gustavia has a few restaurants serving American, Italian, French and other types of food. Gustavia has many high-end boutiques that are an essential source of revenue for the island, and one of the most high class luxury hotels on the island. There is a Royal Swedish Consulate at Gustavia (Consul Dantes Magras).
The climate is a tropical one with only minor variations in temperature. The island’s small surface area of 24 square kilometres (9 sq mi) allows it to take advantage of the smooth and pleasant blow of trade winds. Average water and air temperatures move around 27 °C (81 °F), and the year is divided into two seasons: a dry one, referred to as Lent (Careme), and a more humid one in summer. This latter season sets in between May and November, and the ever-present sun is overcast by short passages of rainclouds with brief showers of 10 to 15 minutes. According to the Köppen Climate Classification system Gustavia has a tropical savanna climate, abbreviated "Aw" on climate maps.
The official currency of Saint Barthélemy is the euro.
Eugénie Blanchard - was the oldest verified person in the world at the time of her death. She spent most of her life in Gustavia.