Whether or not the tower is really Blackbeard's is, of course, debatable. It is, however, an interesting ruin of a tower complete with an inscription inside and wooden staircase. If it was possible to climb to the top (the staircase is far from sturdy!) I'm sure it would offer up great views of the ocean. You can see the ocean from the ground level though.
The tower is right where a previous reviewer said it was: http://maps.google.com/maps?f=q&q=25.052118,-77.287119%20%28Blackbeard%20Terrace%29. When heading east down Eastern Avenue, the turn off for it is on the right and is the road just before the Brazilian Embassy. If you pass the embassy, just turn around at one of the next roads! The tower is right next to someone's home and there's no clear trail to it but it's not very far from the road. The simplest way to get in is to just hug the side of the house's fence.
Certainly fun for a bit of history, speculation, and photos!
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