Glanmore National Historic Site is the finest landmark in Belleville. It is maintained by the City of Belleville Corporation and managed by the Department of Parks, Entertainment and Community Services. Ontario's Ministry of Heritage, Sport, Tourism and Culture Industries provides funds to maintain this historic site. The museum is home to an 1883 mansion noted for its Second Empire architecture & grand period interiors. The collection of artifacts reflecting the history of the Belleville region. Its artifacts related to local history are included as part of the restored rooms of the historic house. Exhibits at Glanmore National Historic Site provide an important link between the community and its heritage. The Historic Site offers public programs and exhibitions. Temporary exhibits relating to local history or topics of community interest are offered annually. However, admission fees is free for children under 5.

Belleville Public Library and John M Parrott Art Gallery have their origins in a Mechanics' Institute operated from 1851 to 1859. This historical landmark is built-in 2006, with three floors, including the art gallery and several meeting spaces. The Library and Gallery is a gathering place for the culture that encourages and promotes lifelong learning, advancement, creation and achievement. The place offers public computers, programs, digital collections and services and online courses. The staff strive to meet all Belleville citizens' educational, recreational and information needs through free and equal access to physical and digital collections. In addition, they make excellent customer service a top priority. The building is now the new home for the Community Archives of Belleville and Hastings County as well. Library card is free to all who live or own property in Hastings County, Ontario, Canada, upon presentation of personal identification showing current address.

Belleville City Hall is the home of the Belleville city council built-in 1873. The building became a city hall in 1877 when Belleville became a city. Its tall Gothic Revival windows distinguish this brick and limestone building on the second floor, a bell-cast mansard roof with dormers, a massive 144-foot clock tower with octagonal buttresses, blind arcades of Gothic columns, four large illuminated clocks. The building sits as a centrepiece to a grouping of churches and major public and commercial buildings. The building originally had only two floors, with the second housing the auditorium and offices for the town. The team at Belleville City Hall makes Belleville a better place to live, work, and play for all residents and visitors to their city. They are committed to offering inclusive goods, services, programs, and facilities that all people can access, benefit from and enjoy.