Blackbeard's Castle is one of five National Historic Landmarks in the U.S. Virgin Islands.

Skytsborg served as a very effective vantage point for Danish soldiers to spot enemy ships.

Fort Christian is at sea level, thus making it ideal for thwarting attackers with cannon fire; however, the fort itself did not provide an ideal view of incoming ships entering the harbor.

It was the centerpiece of a private residence for many years, and was turned into a hotel, but is no longer open to the public.

It has become part of the lore of the island that he used the tower as a lookout for his own purposes of piracy.