Mollet boasts a number of architecturally renowned buildings built in a host of different styles. They include the Romanesque church in Gallecs and the Gothic Sant Vicenç Church; the Can Borrell farmhouse and tower (12th century); La Marineta, a popular 16th-century inn that is now a community and cultural centre; the Noucentista-era buildings of the Can Mulà Library, surrounded by the Can Mulà Park, and Can Gomà, home to the Municipal School of Music and Dance and the Municipal Theatre; along with the building that houses the Abelló Museum, the neo-Gothic façade of the Amadó Pharmacy and the Modernist façade of Casa Viñas, today the Odet Saüc boutique; the house located at 2-4, Carrer de Itàlia, and the Can Boix houses at 67, Carrer de Berenguer III, also Modernist-era; the modern and comfortable Mollet Hospital, which offers spectacular views of Gallecs; the new Municipal Market; and the new City Hall, situated in the centrally-located and modern area known as L’Illa.

Mollet is also home to more than thirty catalogued sculptures, which are scattered throughout the city. In the centre we find the Menhir, which sits in the courtyard outside the Can Mulà Library; the Modernist Fountain, in Plaça de Prat de la Riba, the location of the old City Hall; the façade of the new City Hall, by Joan Brossa; the Arch-Fountain in Les Pruneres Park; La Garriganga and the Harlequin, by Joan Abelló; and the Water Woman, in Rambla Nova.