Rothesay (ˈrɒθsi ; Baile Bhòid ˈpalə ˈvɔːtj) is the principal town on the Isle of Bute, in the council area of Argyll and Bute, Scotland. It lies along the coast of the Firth of Clyde. It can be reached by ferry from Wemyss Bay, which offers an onward rail link to Glasgow. At the centre of the town is the 13th-century ruin Rothesay Castle, unique in Scotland for its circular plan. In modern Scottish Gaelic, Rothesay is known as Baile Bhòid, meaning 'town of Bute'. The English-language name, which was written as Rothersay in 1321, Rosay around 1400, and Rothissaye around 1500, originally referred to the castle. Since the castle was surrounded by a moat connected to the sea, the name may have originally meant 'Rother's Isle' (the Old Norse suffix -ey means "isle"), or it may be an alteration of the Gaelic word rath, meaning 'fort'. The old town centred on Rothesay Castle, which was built in the 13th century. The castle has long stood in ruins, but it is nevertheless picturesque, and was a focal point for tourists as soon the town began developing into a seaside resort. Rothesay was the county town in the civil parish of Rothesay, which was located in the former county of Bute. The county historically included the islands of Great Cumbrae, Little Cumbrae and Arran. Rothesay Town Hall and County Buildings overlooks the castle. During the Victorian era, Rothesay became a popular tourist destination. In particular, it was hugely popular with Glaswegians going "doon the watter" (literally “down the water” – a reference to the waters of the Firth of Clyde). Its wooden pier was busy with steamer traffic. It was home to one of Scotland's many hydropathic establishments, which were in vogue at the time. It also had an electric tramway, the Rothesay and Ettrick Bay Light Railway, which ran across the whole island of Bute and carried passengers to one of the island's largest beaches (the tramway closed in the mid-1930s). A war memorial designed by Pilkington Jackson was erected in 1922.