Translate the following English sentence to French:
"The most serious case is that of the tourist development that has been approved for the Abano area of the Sintra-Cascais national park, and I call on the Commission to intervene in this as a matter of urgency."
Le cas le plus grave est celui du complexe touristique approuvé pour la zone de Abano dans le parc de Sintra-Cascais, pour lequel je sollicite une intervention urgente de la Commission.