Frederiksted is an historical port city on St Croix, part of the US Virgin Islands. It is generally a sleepy, small place known for excellent scuba diving and for a variety of small attractions and vegan restaurants.
Frederiksted Pier is a top attraction, known as the best scuba diving area -- in fact it has been called the best spot for night dives in the Caribbean. The city has more dive sites than the whole island combined, with wrecks, reef, seahorses, fish and underwater sites.
Paddle boarding is also popular in the calm waters around the city. You can also grab a bicycle and explore local wilderness areas with Sandy Point Wildlife Refuge providing exotic flora and fauna.
For history you can check out St. Patrick's Catholic Church built in the 1840s and its primary school and other buildings including Fort Frederik, built as protection from pirate raids.
The island has a tropical climate with year round warm weather, ideal for beach and scuba diving activities.