One of St. Thomas' most visited tourist attractions is an indoor-outdoor aquarium filled with baby sharks, stingrays and touch starfish. Located on the northeast coast of St. Thomas, Coral World also has as walk-through aviary and an offshore underwater observatory with an 80,000-gallon coral reef exhibit.

Despite its popularity, previous visitors voice mixed impressions of the site. "The highlight of the visit was definitely seeing the sharks fed, the reef encounter, the sea turtles, and the sea lions," one TripAdvisor user said. "Without the feedings, it would have been less interesting." Maximize your time at the park by following the feeding and show schedule. If you're only on St. Thomas for the day, consider skipping this attraction in favor of sunbathing on one of the beautiful beaches (like Coki Beach, which is right next door) or perusing duty-free deals along Main Street. 

Coral World welcomes visitors from 9 a.m. to 4 p.m. daily. Admission costs $20 for adults and $11 for kids, but Combination Tickets, which include unique activities, start around $41 and go up from there. For more information, check out Coral World's website.