For a fascinating history lesson, check out the crumbling remnants of Honem Dalim Synagogue Ruins and try to imagine how it looked in its heyday.
You'll be spoiled for sightseeing choice when visiting Oranjestad. Honem Dalim Synagogue Ruins is a good place to begin here, but there are loads of other interesting attractions to consider. St. Eustatius Historical Foundation Museum, White Wall, and The Quill are not far from the once-important structure and will fill in your day nicely.