Concierge.com's insider take:

A third-generation islander whose grandfather built the Lord Nelson Beach Hotel in the forties, Eli Fuller shows visitors a good time on his daylong eco tours. Highlights include trips to the Hawksbill turtle project on Long Island, the nesting grounds of Great Bird Island, and the caves and natural bridges of Hell's Gate Island (268-726-6355; www.adventureantigua.com). Barbuda's Frigate Bird Sanctuary, a mangrove-filled lagoon, shelters more than 175 species and is home to over 5,000 graceful, red-throated frigate birds, whose wingspan can reach eight feet. The Barbuda Express offers catamaran excursions that include a visit to the sanctuary (268-560-7989; www.antiguaferries.com).