In the southwestern corner of France on the Atlantic Ocean is the French Basque region where you can visit a number of beautiful seaside resort towns. Most famous is Biarritz, which was a favourite of Sir Winston Churchill as well as both French and English Royalty. Nearby is the city of Toulouse, a leading European centre of the aviation and space industries. Toulouse grew on the banks of the River Garonne and is the fourth largest in France (after Paris, Lyon, and Marseille). The city is rich in Gothic, Roman and Renaissance architecture.