 In some churches with double aisles, or additional rows of chapels between the buttresses as at Notre-Dame de Paris, the transept does not project beyond the aisles (See plan).In English churches and cathedrals, transepts tend to project boldly and there may be two of them, as at Salisbury and Lincoln Cathedrals.The double transepts are to provide extra chapels, in lieu of the apsidal chapels found in major French churches (See Salisbury plan).