Ascq main monuments are Saint-Pierre-en-Antioche Church (19th century), based on a building of 15th century, gare d'Ascq (19th century) railway station, the post office, the town hall (20th century) and the Château Claeys (20th century).
Other notable buildings are Ascq water tower (20th century) which can be perceived very far away, Arthur Rimbaud collège, the old distillery with its brick chimney, chocolate factory Bouquet d'Or, artisanal brewery Moulins d'Ascq, the old gristmills.