If you are planning on visiting Tortola anytime soon then you should consider going on a trek up the National Park of Sage Mountain. The National Park is home to the highest peak on the island and is spread across 86 acres and was founded in 1964.
The National park is made up of a variety of trees that are white cedar, West Indian and Honduran mahogany just to name a few. The park is 1000 feet above sea level and is home to may rare plant species.
When I went on a Caribbean cruise this was one of the stops and this is one of the excursions that we went on and I will tell you now, I personally found it disappointing. When you go to a new place of nature, especially one that is named a National Park you expect to see a variety of birds and wildlife. This sadly was not the case. According to our tour guide the only wildlife that is in the woodland is lizards. We saw one lizard, I love them but for a park as vast as that, it was a tad disappointing.
If you visit Tortola then it is something that you should visit if you want a nice view and to learn more about the plants of the island but that is the only reason.