Castles around Ternate offer a glimpse into the island's rich history as a hub in the global spice trade. This Indonesian island in North Maluku features historical forts and a significant sultanate palace. These structures, built by European colonial powers and the local sultanate, provide insights into the competition for control over valuable spices. The island's geography and historical significance make it a notable destination for exploring colonial architecture and local heritage.
Last updated: June 29, 2026
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Spectacular view of the city of Arona and Lake Maggiore
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Ferry available (also with bicycle)
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Once you arrive in Arona, walk along the lakeside and have an ice cream, go up to visit the statue of S. Carlone but... don't forget to visit the Rocca too! Founded in a period shortly before the year 1000 under the control of the Lombards, for four centuries the Rocca remained in the hands of the Borromeo family, giving birth to Cardinal San Carlo Borromeo in 1538; the history of the Rocca di Arona ends in 1800 when the Napoleonic army received the order to destroy some fortifications occupied by the Austrians; from that moment on only a few ruins of the Rocca di Arona remain. From above you can also enjoy a spectacular view of Arona below, of Angera opposite and of this entire stretch of lake!
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Built in the 14th century as a hunting lodge.
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Ottone Visconti, elected archbishop of Milan by Pope Urban IV in 1262, but not by the Major Chapter of the cathedral, was not able to take possession of his seat until 1277, after the victory obtained in Desio over the enemies of the Tower. In 1280, as the owner of Angera – assigned to the Milanese Church since 1162 – he had a Hall of Justice built in the Rocca, where legal and economic matters were administered. With a masterly coup, his nephew and Lord of Milan Matteo Visconti had the archiepiscopal archives (kept in the monastery of S. Radegonda) burned, with the papers regarding the possession of Angera by the Milanese Church, and claimed the inheritance of the place as a personal domain of the Viscontis, by virtue of a legendary descent of their lineage from Angleria. Between 1314 and 1316, Matteo commissioned a local fresco painter, no better known than the Maestro di Angera, to decorate the Hall of Justice with episodes of the victory of Desio and the entry of Ottone Visconti into Milan, taken from an apologetic book written by Stefanardo da Vimercate. Above the stories is the Zodiac, now only partially preserved, but with an iconographic program that can still be reconstructed. When Matteo commissioned the frescoes, the lawyers and judges of the Ambrosian Church no longer met in the Hall, but the Rocca had by then become a private seat. Why did Matteo want to decorate it so expensively? The Hall of Justice is divided into two bays with cross vaults; it is accessed through a door on the south side, in front of which was originally the judge's chair. Each side of the span enclosed two zodiac signs with their respective governing planet in a lunette, framed by a polychrome decoration – which extended to the cordoning of the sails – among the best preserved of the Lombard fourteenth century. Another peculiarity are the monstrous or extravagant figures that surround only the lunette of the second western span, taken from illustrations of naturalistic texts, such as the De natura rerum by Thomas de Cantimpré. https://www.storiadimilano.it/arte/zodiaco_angera.htm
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Decentralized from the town centre, now a hamlet of Sumirago, the castle was built in the 14th century as a home for hunting activities. It has a massive quadrangular structure, with a central courtyard and a sturdy square tower overlooking the valley. The transformations of the 17th century converted the castle into a residential villa, while maintaining some features of the origins. The park, built in the 18th century in the English garden style, is home to three farmhouses.
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From the town, a somewhat steep footpath leads upwards. It is marked at the entrance with a red Rocco sign. At the top, in La Corte della Rocchetta, there is the opportunity to eat and drink.
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Ternate boasts several forts with deep historical roots. Fort Oranje, built by the Dutch East India Company, was a major center of VOC authority. Fort Kastela is notable as the first colonial fortification in the Spice Islands, dating back to 1522. Fort Tolukko and Fort Kalamata also played crucial roles in the spice trade, changing hands between various European powers and the Ternate Sultanate.
For stunning panoramic views, Fort Tolukko is an excellent choice. Perched on a hill, it offers breathtaking vistas of the Maluku Sea, Tidore Island, and the western coast of Halmahera Island. Fort Kalamata also provides beautiful views of the surrounding islands and Mount Gamalama from its picturesque seaside location.
Yes, Fort Oranje is centrally located and features a beautiful garden and a park with decorative lights and fountains, making it a pleasant spot for families. Visitors can explore its well-preserved walls and grounds. The Ternate Sultanate Palace Museum also offers a cultural experience that can be engaging for families interested in local history and artifacts.
Near Ternate's historical sites, you can find various outdoor activities. For running, there are routes like the Lake Comabbio loop or paths with views of Lake Varese. Mountain biking enthusiasts can explore trails such as the Lake Varese – Lake Comabbio Cycle Path loop. Gravel biking options include routes like 'Forests, rivers and swamps by gravel bike' or the 'Two lakes Tour'. You can find more details on these activities in the Running Trails around Ternate, MTB Trails around Ternate, and Gravel biking around Ternate guides.
To delve into the Ternate Sultanate's history, visit the Ternate Sultanate Palace Museum. This active palace, built in 1813, houses a museum with historical artifacts of the Sultanate, including crowns, thrones, war equipment, and a handwritten Quran. It provides rich cultural and historical insights into the local monarchy and its interactions with European powers.
Fort Tolukko stands out for its unique Iberian fortification style, built by the Portuguese in 1522. Its adaptation to the immediate topography gives it a distinctive structure. Fort Kalamata also features a unique star shape, designed to resemble the four corners of the world with four pointed fortresses.
Generally, the dry season (typically from May to September) is considered the best time to visit Ternate. During these months, you can expect less rainfall and more sunshine, which is ideal for exploring the outdoor fort sites and enjoying the panoramic views without interruption.
While Fort Oranje is popular due to its central location, Fort Kalamata often provides a quieter and more reflective experience. Its well-maintained grounds and picturesque seaside setting can be enjoyed without the larger crowds sometimes found at more prominent sites. Fort Kastela, being in a ruined state, also tends to attract fewer visitors, offering a more solitary historical exploration.
Fort Oranje was initially built by Admiral Cornelis Matelieff de Jonge of the Dutch East India Company (VOC) in 1607, on the site of an earlier Malay Sultanate fort. It was renamed Fort Oranje in 1609 and served as the primary center of VOC authority in the Maluku region and later as the administrative center for the Dutch.
Yes, the Ternate Sultanate Palace is open to visitors as a museum. It remains in use by the Sultanate family, offering a unique glimpse into a living historical institution. Visitors should be aware that access might be limited to certain times and days, and specific rules may apply when inside, so it's advisable to check locally for current visiting hours.
Fort Kalamata typically does not charge an entrance fee, allowing visitors to explore its unique star-shaped architecture and enjoy the views freely. While other forts might have small fees or donation requests, Fort Kalamata is generally accessible without cost.
Ternate's forts were central to the global spice trade. They were built by European colonial powers (Portuguese, Dutch, Spanish, British) and the local Ternate Sultanate to control and monopolize the lucrative clove trade. Their strategic locations allowed them to monitor ships, deploy troops, and serve as storage facilities for spices, highlighting the intense competition for control over these valuable commodities.
While specific marked walking trails directly around each fort might vary, the areas surrounding forts like Fort Oranje (with its park and garden) and Fort Kalamata (by the sea) offer pleasant areas for leisurely strolls. For more dedicated walking or running, you can explore routes like the Lake Comabbio loop or paths with views of Lake Varese, detailed in the Running Trails around Ternate guide.


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