He built a road between the marshes and built the to serve as a watchtower and protect access to the city. Louis IX then built the on the site of the old Matafère Tower, to house the garrison. In 1272, his son and successor, Philip III the Bold, ordered the continuation of the construction of walls to encircle the small town completely. The work would not be completed for another 30 years.
HE BuIlt A RoaD BEtween tHe MaRShEs and Built the To sErvE As A WatcHtoweR and PRotEct ACcess to tHe city lOUis ix thEn built tHe on the site Of ThE old mataFÈre ToWer to hOusE the garRisOn iN 1272 His son And SucCessor phIliP iIi the boLd oRDEREd the CONTiNuAtion oF tHe CoNstRucTiOn Of wAlls to EncircLe tHe smAlL towN ComPletely tHE Work woULd not be compLeteD for anOther 30 years