Here are the latest South Boston neighborhood notes:

Free ferries

Boston Harbor Islands will celebrate their opening day with a free ferry day, a special one-day ferry schedule to two of the most popular Boston Harbor Islands - Georges and Spectacle Islands - on Saturday, May 18.

Visitors can have a picnic, take a tour of historic Fort Warren, hike the trails, explore the beach or just enjoy the views of scenic Boston Harbor.

The ferries depart from Long Wharf North. Tickets are first-come, first-served and are available from 8 a.m. on the day at the Boston Harbor Cruises ferry center on Long Wharf North. Boats for Georges Island will leave at 10 a.m., noon and 2 p.m. and return at 11 a.m. and 1, 3 and 5 p.m. Boats for Spectacle Island will leave at 9:30 and 11 a.m. and 1 p.m. and return at noon, 2 and 4 p.m. Each adult may pick up a maximum of four tickets.

Visit www.bostonharborislands.org or call 617-223-8666 for more details.

Book sale

The Friends of the South Boston Branch Library will host the Merry Month of May book sale from 10 a.m. to 3 p.m. on Saturday, May 18 at the library, 646 East Broadway.

The sale will feature lots of adult and juvenile books and audiovisual materials for bargain prices. Proceeds will benefit the community programs of the Friends.

Call the library at 617-268-0180 for further information.

Bands and benefit run

Harpoon Brewery, 306 Northern Ave., will host the annual summer festival from 1 to 7 p.m. on Saturday, May 18. The 18th annual five-mile road race will be held from 10 a.m. to 3 p.m. on Sunday, May 19.

Festivities will include food and choices of beer, held outside and under tents. Participants can take a tour of the brewery, keg bowl for charity, try food from local vendors and enjoy a brew. Popular up-and-coming bands, musicians and DJs will perform on multiple stages.

A cover charge of $25 will include a souvenir pint cup and one drink ticket. Attendees must be 21-plus with an I.D. A shuttle service will run from South Station.

On Sunday at 10 a.m., the five-mile road race will take place along the South Boston waterfront with proceeds benefiting the Angel Fund in its fight against ALS (amyotrophic lateral sclerosis). The run will feature a well-run course, costumes, kegs of beer and the largest Sunday morning dance party in town. Runners of all levels will compete.

Early access passes will be available for $30 and $42.

For a full schedule of activities, visit www.harpoonbrewery.com or call 888-427-7666.

South Boston architecture

The 39th annual Marjorie M. Gibbons lecture will be held from 6 to 7:30 p.m. on Monday, May 20 at the South Boston Branch Library, 646 East Broadway.

This lecture will focus on South Boston history and architecture. Historian Stephen Jerome will draw from maps, prints, newspaper articles and photographs to introduce largely forgotten 19th century architects who designed buildings in South Boston. Though some of these buildings have long since been destroyed, may have survived and they constitute important vestiges of the Victorian character of “Southie.”

Admission is free.

For more information, visit www.bpl.org or call 617-268-0180.

Celebrating Ida Lupino

The South Boston Branch Library, 646 East Broadway, will celebrate actress and director Ida Lupino with a free screening of her films from 1 to 3 p.m. on Tuesdays, May 21 and May 28.

Featured will “The Sea Wolf” “The Hitchhiker” directed by Lupino and starring Edmond O’Brien on May 21 and “Private Hell 36,” starring and co-written by Lupino, the following week.

Admission is free. Call 617-268-0180 for more information.

Coffee hour

Mayor Martin J. Walsh and the Parks and Recreation Department will host the 21st annual neighborhood coffee hour and opening celebration from 9:30 to 10:30 a.m. on Wednesday, May 22 at Moakley Park, 446 Old Colony Ave.

Residents will enjoy coffee and breakfast treats from Dunkin’ Donuts and Whole Foods Market while they discuss open space and recreational needs with the mayor.

There will be prizes, including gift certificates, swan boat rides, free downtown parking and gift baskets. Attendees will receive a flowering plant grown in the city’s greenhouses.

Call 617-635-4505 for more information

Citizenship class

The South Boston Branch Library, 646 East Broadway, will offer a free citizenship class from 5 to 7:45 p.m. on Thursday, May 23.

Project Citizenship will provide applicants free technical and legal help in completing their applications for citizenship. The class prepares students for all parts of their citizenship test and will cover the literacy test, 100 questions about U.S. history and government and help students improve their speaking and listening abilities in English.

Requirements are basic level English and legal permanent resident card for five years or three years if married to an American citizen. This program is in partnership with the St Mark Community Education Program.

Visit www.bpl.org or call 617-268-0180 for further details.

Island stewardship

The Boston Harbor Islands will host a Stewardship Saturday from 9 a.m. to 3 p.m. on Saturday, May 25 on Grape Island. The boat will depart from Courthouse Dock, 2 Northern Ave.

Volunteers will study changes in park biodiversity. They will explore the local flora and fauna and discuss the ecology and natural history of the park, working to improve the habitat for the native birds, bugs and flowers of the local national park. There will also be opportunities to search for invasive pest insects and plants and to catalog bird use in the park.

Participants should dress appropriately in layers for the weather, wear closed-toe shoes and bring a water bottle and lunch. Sunscreen and a hat are recommended. Tools will be provided.

To register, visit www.bostonharborislands.org or call 978-360-0421.

Castle Island tours

The Castle Island Association and the Massachusetts Department of Conservation and Recreation will offer free, guided, 60-minute tours of Fort Independence at Castle Island from noon to 3:30 p.m. on Saturdays and Sundays, starting on Saturday, May 25. Castle Island is located at the end of Day Boulevard.

Castle Island, the oldest continuously fortified site in North America, is home to Fort Independence, a pentagonal five-bastioned fort built between 1834 and 1851. Castle Island’s eighth fort was built with granite from quarries in Rockport.

Fort Independence and Castle Island are on the State and National Registers of Historic Places.

Further information can be found at www.mass.gov/dcr or by calling 617-333-7404.

Group art show

The Distillery Gallery, 516 East Second St., is displaying the group art show “You Must Not Stand in One Place,” now through June 21.

The exhibition brings together artists who tap into alternative worlds by creating grand and radical meta-narratives of society. Through a variety of mediums, they investigate global concerns of today: identities, markets, machines and environments to arrive at value systems that challenge what we can strive for in our current world.

The artists include: Ryan Aasen, Kamal Ahmad, Autumn Ahn and Camille McOuat, Dennis Congdon, Marissa Cote, Medar de la Cruz. Evelyn Eastmond, Tory Fair, Lina Maria Giraldo, Nash Glynn, Duy Hoàng, Kathya Landeros, Jason Lin, Jonathan Mildenberg, Peter Pa, Sheida Soleimani, Jess X. Snow, Keith Washington and Chien-Ying Wu.

The gallery is open from 9 a.m. to 5 p.m. on Mondays to Saturdays and by appointment.

Further information is available at www.distillerygallery.com.

Pop-up art talk

A pop-up talk will be held from 6 to 8 p.m. on Fridays in the fourth floor galleries at the Institute of Contemporary Art, 100 Northern Ave. The talk will introduce visitors to a different perspective of contemporary art from individuals who study the exhibitions every day. The visitor assistants (VAs), wearing “Ask Me” buttons, will give 15-minute talks in front of works of art.

Tickets are free with museum admission.

Visit www.icaboston.org or call 617-478-3103 for further details.