Quarry system under Paris :
A short run through the quarry galleries under Paris, in the north of the network (see also Quarry)

St Sulpice Church :
Under the St Sulpice Church, a crypt that contains the vestiges of the primitive church (see also Monument)

Boulogne Main Sewer :
Drive a train through an under construction main sewer and get to the head of the monster (see also Technical Gallery)