Royal Tunbridge Wells is a town in the county of Kent, 30 miles (50 kilometres) southeast of central London. It is situated on the border with East Sussex on the northern edge of the High Weald. The local sandstone geology is synonymous with a rugged landscape due to erosion and weathering. The town itself was a spa during the Restoration and became a very fashionable resort in the middle of the 18th century. Socialites such as Beau Nash helped make the resort popular when the Pantiles and its chalybeate spring, began attracting visitors who came to “take the waters”. Despite the decline in spa towns after sea bathing grew in popularity, Royal Tunbridge Wells has remained a tourist resort. Today, much of the area's income is generated by tourism. The town has an equitable temperate maritime climate.