Magens Bay (18.366°N 64.930°W / 18.366; -64.930) is a bay in the Northside region on Saint Thomas, United States Virgin Islands, located in the Caribbean.
Located on the North (Atlantic) side of the island, Magens Bay (Estate Zufriedenheit) features a well-protected white sand beach stretching for nearly three quarters of a mile. It is one of the most popular tourist destinations on the island, as well as a gathering place for locals. The beach sits at the head of a deep bay, the arms of which are Peterborg peninsula to the east and Tropaco Point to the west. The bay's northwest exposure means its waters are usually calm, although storms in the North Atlantic can occasionally generate large waves in the winter months. The sandy bottom means snorkeling is of limited interest, although turtles, conch, tarpon and other fish are commonly spotted. Local fishing boats anchor in the eastern part of the bay where there is a boat ramp.
The beach and surrounding park are currently administered by the semi-autonomous Magens Bay Authority. The services provided by the Authority include lifeguards, parking, showers and bathrooms. There is a snack counter, bar and souvenir shop. Beach chairs, floats, lounge chairs, mask and snorkels, fins, towels, lockers, paddleboards, kayaks, and paddleboats can be rented. The Authority is a self-sustaining entity which funds its operations through a per-person entrance fee (currently $4.00 for visitors and $2.00 for locals), parking fees, and payments received from the park's restaurant and rental concessions.
The beach property also includes a coconut grove, a mangrove, and an arboretum. In 2004, The Nature Conservancy and local organizations opened a trail to Magens Bay from a spot off the road in the hills above.
Legend has it that Sir Francis Drake used Magens Bay as an anchorage while waiting for ships to plunder.
Early maps of St. Thomas refer to the site as "Great Northside Bay". The popular name, "Magens Bay, arose out of its ownership by Jacob Jorgenson Magens and his heirs from the late 18th through the 19th centuries. It changed hands in the 20th century, and was eventually acquired by Wall Street financier Arthur S. Fairchild.
Arthur Fairchild donated 56 acres of the beach and surrounding areas to the Municipality of St. Thomas and St. John in 1946 for use as a public park. The far Western portion was donated by Fairchild's nephew's widow, Christine Wheaton, in 2002.
Several commercials and movie scenes have been filmed at Magens Bay, including a scene in The Twilight Saga: Breaking Dawn – Part 1.