Question: In what city do you find a a railway halt near a Castle overlooking the Firth of Clyde?

full_context: Document 1: Balchriston Level Crossing Halt railway station: Balchriston Level Crossing Halt was a railway halt near Culzean Castle, South Ayrshire, Scotland. The halt was part of the Maidens and Dunure Light Railway.
Document 2: Culzean Castle: Culzean Castle ( , see yogh; Scots: "Cullain" ) is a castle overlooking the Firth of Clyde, near Maybole, Carrick, on the Ayrshire coast of Scotland. It is the former home of the Marquess of Ailsa, the chief of Clan Kennedy, but is now owned by the National Trust for Scotland. The clifftop castle lies within the Culzean Castle Country Park and is opened to the public.
Document 3: Elms Bridge Halt railway station: Elms Bridge Halt was a request stop on the former Coleford, Monmouth, Usk and Pontypool Railway. It was opened on 27 March 1933 to serve the villages near Raglan, Monmouthshire. It was closed in 1955 following the withdrawal of passenger services on the line. It was located in a small cutting near a small road bridge about 5 miles and 56 chains from Monmouth Troy. The halt was of earth and cinder construction, typical of the Great Western Railway.
Document 4: Brockmoor Halt railway station: Brockmoor Halt was a small railway stop on the Wombourne Branch Line. It had very poor patronage and, along with the rest of the line's passenger stations, was closed just seven years after its introduction by the Great Western Railway in 1925. The halt served the small town of Brockmoor, which is now a part of the Brierley Hill area.
Document 5: Eglinton Country Park: Eglinton Country Park is located in the grounds of the old Eglinton Castle estate, Kilwinning, North Ayrshire, Scotland (map reference NS 3227 4220). Eglinton Park is situated in the parish of Kilwinning, part of the former district of Cunninghame, and covers an area of 400 hectares (98 acre of which are woodland). The central iconic feature of the country park is the ruined Eglinton Castle, once home to the Eglinton family and later the Montgomeries, Earls of Eglinton and chiefs of the Clan Montgomery. Eglinton Country Park is managed and maintained by North Ayrshire Council and its Ranger Service.
Document 6: Kelburn Castle: Kelburn Castle is a large house near Fairlie, North Ayrshire, Scotland. It is the seat of the Earl of Glasgow. Originally built in the thirteenth century (the original keep forms the core of the house) it was remodelled in the sixteenth century. In 1700 the first Earl made further extensions to the house in a manner not unlike a French "château" which is virtually how it appears today. In 1977 the house and grounds opened to the public as a country park. It is one of the oldest castles in Scotland and has been continuously inhabited by the same family for longer than any other. The castle is protected as a category A listed building, while the grounds are included in the Inventory of Gardens and Designed Landscapes in Scotland.
Document 7: King's Bridge Halt railway station: Kings Bridge halt was part of the Belfast and County Down Railway system. King's Bridge Halt opened on 01/11/1929 and closed 01/1942 during the Second World War.
Document 8: Thirlestane Castle: Thirlestane Castle is a castle set in extensive parklands near Lauder in the Borders of Scotland. The site is aptly named Castle Hill, as it stands upon raised ground. However, the raised land is within Lauderdale, the valley of the Leader Water. The land has been in the ownership of the Maitland family since 1587, and Thirlestane served as the seat of the Earls of Lauderdale. The castle was substantially extended in the 1670s by the first and only Duke of Lauderdale. Further additions were made in the 19th century. The castle is now cared for by a charitable trust, and is open to the public.
Document 9: War Department Halt railway station: The War Department halt was an informal railway station on the Romney, Hythe and Dymchurch Railway in Kent, England. Over the 15 years that the station was open, its location is believed to have moved several times. Details are scarce as this was a secret military installation, but the end of the War Department branch line moved as building work (see below) moved onto new stages. When the installation closed in 1945 the railway company took over the line for freight shipment of ballast. Again, the end point of the line changed several times as the exact location of extraction of ballast changed, until closure of the branch in 1951. The locations of the halt are now under water owing to subsequent commercial extractions and flooding of the ballast pits.
Document 10: Seagate Castle: Seagate Castle is a castle in North Ayrshire, in the town of Irvine, close to the River Irvine, Scotland. The castle was formerly a stronghold, a town house, and later a dower house of the Montgomery Clan. The castle overlooks the oldest street in Irvine, which was once the main route between the town and the old harbour at Seagatefoot, which by 1606, was useless and abandoned due to silting. The remains of the castle are protected as a scheduled ancient monument.
Document 11: Industry and the Eglinton Castle estate: The Eglinton Castle estate was situated at Irvine, on the outskirts of Kilwinning, North Ayrshire, Scotland (map reference NS 3227 42200) in the former district of Cunninghame. Eglinton Castle, was once home to the Montgomeries, Earls of Eglinton and chiefs of the Clan Montgomery. Eglinton Country Park now occupies part of the site.
Document 12: Falls of Cruachan derailment: The Falls of Cruachan derailment occurred on 6 June 2010 on the West Highland Line in Scotland, when a passenger train travelling between Glasgow and Oban hit boulders on the line and derailed near Falls of Cruachan railway station, after a landslide. The two-car diesel multiple unit caught fire (which was soon put out with fire extinguishers) and one carriage was left in a precarious position on the 50 ft high embankment. Sixty passengers were evacuated, some with minor injuries; eight of those were hospitalised as a precaution. However, no people were killed. In addition to blocking the line, the incident also caused the closure of the A85 road below the rail line. Both road and rail were closed for a week.
Document 13: Ardrossan Castle: Ardrossan Castle is situated on the west coast of Scotland in the town of Ardrossan, Ayrshire. The castle, defended by a moat, stands on a ridge above the town. There is a keep dating from the fifteenth century, and a vaulted range containing a kitchen and cellars. In a deep passageway there is a well. Part of the keep remains up to the corbels of the parapet, but it is in ruins. The original castle, owned by Clan Barclay, was partly destroyed during the Wars of Scottish Independence. This event, in which the English garrison were slaughtered, became known as "Wallace's Larder," a name which is still applied to the remaining vaults. Rebuilt by Clan Montgomery in the 15th century, Ardrossan later fell into disuse and was partially demolished by the soldiers of Oliver Cromwell in the 17th century who used the stones to help construct the Ayr Citadel.
Document 14: Cawdor Castle: Cawdor Castle is set amid gardens in the parish of Cawdor in Nairnshire, Scotland. The castle is built around a 15th-century tower house, with substantial additions in later centuries. Originally a property of the Calder family, it passed to the Campbells in the 16th century. It remains in Campbell ownership, and is now home to the Dowager Countess Cawdor, stepmother of Colin Campbell, 7th Earl Cawdor.
Document 15: Gree Goods station: Gree Goods station or Gree Depot as it was listed in the Caledonian Railway Working Timetable was a relatively short lived railway freight facility located approximately one miles south of Lugton on the A736 Lochlibo Road, North Ayrshire, Scotland. Gree Goods served the industrial and agricultural requirements for transportation in the vicinity, with the village of Burnhouse not far away, sitting on the crossroads to Barrmill, Dunlop and Irvine. Over Gree, High Gree, Nether Gree, Gree and Brownhills Farms were located nearby. Gree Goods was close to the Lugton East Junction, just south of the 11 arch Gree Viaduct. The nearest passenger station on the line north was Lugton High and to the south was Giffen.
ground_truth: South Ayrshire, Scotland