How the avenue came to be
Avenue des Rogations runs from boulevard Brand Whitlock to rue de Linthout. Its line belongs to the grid drawn around 1900 by Firmin Lambeau, administrator of the Tuinbouwmaatschappij van Linthout — a horticultural company founded in 1898 that turned itself into a property developer and parcelled out the land along the new boulevard. The street name, recalling the old rogation processions, was fixed by the municipal council on 19 December 1900.
Building went up in a rush in the mid-1900s, mostly in the eclectic style of the day. But geometric Art Nouveau got its share: Édouard Frankinet built his own house here at no. 21 and three more besides; Paul Hamesse signed the trio at 39–43; Camille Damman signed no. 15; Désiré Van Hemelryck worked at 11, 67–71 and 102. Hamesse's manner shows up again in unsigned fronts at 26–30, 53–57 and 60.