1. Blackbeard's Castle, also known as Skytsborg Tower, is a historic landmark located in St Thomas, in the U.S. Virgin Islands. The tower was built by the Danes in 1679 as a watchtower to protect the harbor from pirate attacks. It is said to have been named after the infamous pirate Blackbeard, who allegedly used the tower as a vantage point to spot incoming ships.

The castle is situated on Government Hill and offers panoramic views of the Charlotte Amalie harbor and the surrounding islands. Visitors can climb the historic steps of the tower to reach the top and enjoy the breathtaking views.

2. Blackbeard's Castle is open daily from 9am to 5pm. For more information and inquiries, you can contact the castle at +1 340-776-1234.

3. Ticket prices for Blackbeard's Castle vary depending on whether you want to visit the tower only or include additional attractions such as the botanical gardens and historic ruins on the property. Transportation to the castle is available by taxi or rental car, as it is located within a short distance from the main town of Charlotte Amalie.