Getting there: Boldt Castle is on Heart Island in the St. Lawrence River off Alexandria Bay. Accessible by water taxi, tour boats and private boats.
Hours: May 13-Oct. 9, daily 10 a.m.-6:30 p.m. July and August until 7:30 p.m.
Admission: $4.25 for adults, $2.50 for children ages 6-12. Tours are self-guided.
Services: The five-acre island is fully handicapped accessible, has complete restroom facilities, extensive docking for private boats, several picnic areas, a gift shop and a food and beverage concession.
Extra: Boldt Yacht House on Wellesley Island. Open May 20-Sept. 30, daily 10:30 a.m.-6 p.m., and July and August until 6:30 p.m. Admission is $2.50 for adults, $1.50 children ages 6-12. Free shuttle service available from Boldt Castle to Yacht House.
Phone: In season, 315-482-9724; off-season, 315-482-2501.
Information: For more information about other regional attractions and events, phone the 1000 Islands International Tourism Council at 1-800-847-5263 or visit the Web site www.visit1000islands.com.