Fort Beekenburg stands on the Caracasbaai peninsula, east of Willemstad, where the bay forms one of the island's rare natural access points to its interior. That's precisely why governor Nicolaas van Beek had this fort built in 1703: to protect the entrance to the Spanish Water from pirates and rival powers who might have used it to reach Willemstad. Its round tower, built with stones brought from the Netherlands that were originally used as ship ballast, gives it an instantly recognizable silhouette, a bit like a chess tower facing the sea.

Access to the fort is free, with no set hours or ticket booth. You climb a stone staircase to the platform at the top, from where the view stretches across the entire Caracasbaai and the Spanish Water. The wind blows here almost constantly, and the silence of the place contrasts with the activity it saw for over a century, when cannons kept watch over the passage.

A few minutes' walk away, two other traces of the past are worth the detour: Tugboat Beach, where a shipwreck rests visible just below the surface, and the old quarantine building, built in 1882 to isolate sailors suspected of yellow fever, now abandoned but still accessible from the nearby hill. Together, these three sites tell a story of vigilance and isolation that shaped this tip of the island for more than two centuries.