Sheffield Island visitors are in for a real scare as they embark on a ghost-hunting adventure to the Norwalk Seaport Association's 'Haunted Sheffield Island Lighthouse on Saturday, Aug. 11, and Sunday, Aug. 12.

The historic Sheffield Lighthouse has been decorated to provide spine-tingling thrills for youngsters of all ages. Haunted lighthouse activities are free, but participants must purchase round-trip ferry tickets, which are $22 for adults, $12 for children 4 to 12 and $5 for 3 and younger.

The ferry to Sheffield Island departs at 11 a.m., 2 and 3:30 p.m. from the Sheffield Island dock, which is adjacent to the Stroffolino Bridge, at Washington and Water streets in South Norwalk.

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"Sheffield Lighthouse will be transformed into a `gently' haunted house for the weekend," said Irene Dixon, president of the Norwalk Seaport Association. "This special weekend is just one of a range of activities we offer for children and adults at the historic lighthouse that allows them to learn a bit of maritime history and enjoy the lighthouse, the island and the Sound."

For information, visit www.seaport.org or call 203-838-9444.