[3] Notable for its long-standing tradition in jewelry-making, Gondomar is considered the heart of Portugal's goldsmithing industry, accounting for 42% of the country's annual production.

The Carta de Couto was later confirmed by King Afonso II during the Inquirições and recognized Gondomar as the honra (noble domain) of Soeiro Reymondo, who owned a manor in the area.

[6] In 1515, during the reign of King Manuel I, Gondomar was granted its first foral (charter), which modernized its administrative and fiscal framework as part of the monarch’s broader reforms aimed at centralizing power and updating local taxation systems.

Various administrative adjustments in the localities of Melres, Rio Tinto, Lomba, and São Pedro da Cova altered the municipality's boundaries.

The station became a vital hub for transporting goods such as coal from São Pedro da Cova, corn, furniture, and passengers, driving industrial development in the area.

[8] Significant milestones in the 20th century include the establishment of the parish of Baguim do Monte in 1985 and Gondomar's elevation to city status in 1991, followed by Rio Tinto in 1995 and Valbom in 2005.

Among its notable exhibits are a replica of the Belém Tower and a filigree dress designed by Micaela Oliveira in collaboration with jeweler Arlindo Moura.

[18] Additionally, Gondomar is served by STCP buses, which provide regular connections to Porto, and by other bus operators under the UNIR network, linking the municipality to surrounding areas.