Here are the latest Charlestown - Navy Yard neighborhood notes:

Lobsters at the library

Educators from the New England Aquarium will visit the Charlestown Branch Library, 179 Main St., at 2 p.m. on Tuesday, Aug. 29.

Kids can learn about the biology of this popular crustacean and the lobster fishery in New England. They will interact with a real lobster trap, learn about sustainable lobster fishing and even meet a real live lobster. Admission is free. For more details, call 617-242-1248.

Public safety

A Charlestown safety meeting will be held at 6 p.m. Wednesday, Aug. 30, at the Charlestown Police Station District 1-A, 20 Vine St.

The community is invited to meet the police to discuss public safety issues.

Visit www.charlestownmothersassociation.org for more information.

Navy Yard tour

The Boston National Historical Park will offer a free walking tour at 6 p.m. on Friday, Sept. 1. Participants will meet in front of the flagpole at Pier 1, Charlestown Navy Yard.

A National Park Service ranger will lead an exploration of the Navy Yard, home to many people and a place of production and technological innovation, with workers serving the U.S. Navy for generations.

Visit www.nps/gov/boston or call 617-482-1722 for further information.

Muskets, men and liberty

Boston National Historical Parks will lead free guided tours “Of Muskets, Men and Liberty” at 11:30 a.m. and 12:30, 2:30 and 3:30 p.m. on Friday and Saturday, Sept. 1 and 2 at the Bunker Hill Monument.

Visitors will discover why three men from very different backgrounds were fighting for a common cause because of their shared desire for liberty.

For more information, call the visitors’ center at 617-242-5601 or go online to www.nps.gov/boston.

Weekend fun

The USS Constitution Museum, 88 Constitution Road, will host a Labor Day weekend family program, “All Hands to Mischief,” from 9 a.m. to 6 p.m. on Saturday to Monday, Sept. 2 to 4.

Families can learn how sailors spent their time between chores and battle with activities such as writing letters home (with quill pens), playing colonial board games and getting (temporary) tattoos, as well as visit the hands-on and interactive exhibits.

Admission is free. Visit www.ussconstitutionmuseum.org or call 617-426-1812 for more details.

Art in the park

The 20th annual Art in the Park celebration will take place from 10 a.m. to 5:30 p.m. on Saturday, Sept. 9, at City Square Park, Chelsea Street. The rain date is Sunday, Sept. 10.

More than 60 artists and artisans will display paintings, sculptures, prints, decorative art and pottery in this juried event. Artists will be present to meet and greet visitors during the daylong celebration. New this year is a painting tent. The community is invited to enjoy art, live music, lots of food and fun.

The Artists’ Group of Charlestown and the Friends of City Square Park are sponsoring this program.

Call 617-241-0130 or visit www.artistsgroupofcharlestown.com for more information

Marine museum

The Boston Marine Society at Building No. 32, Charlestown Navy Yard, is open to the public from 9 a.m. to 4 p.m. on Mondays through Fridays.

The society hosts a large collection of art and artifacts depicting maritime history and life on the sea, as well as a research library, detailing the history of sailing and marine commerce and the history of one of the oldest and most important ports in the country.

Its website includes selected objects from its collection and the history of the organization. Visit www.bostonmarinesociety.org or call 617-242-0522 for more information.

Diorama display

The Bunker Hill Monument Museum, 45 Monument Square, is open daily from 9 a.m. to 5 p.m. Located on the Freedom Trail, the museum displays the history of the construction of the Bunker Hill Monument as well as a diorama of the historic battle. A cyclorama shows a 360-degree view of the battlefield.

The Charlestown Historical Society keeps its archives in this building, which once served as the neighborhood’s public library.