Originally named Queen Square station, it was built in an elegant style which blends well with the Georgian buildings around it and includes a vaulted glass roof in a single-span wrought iron arch structure.
The platform accommodation in the station was modest, having an arrival platform and a departure platform, with two sidings between them. The siding adjacent to the arrival platform was equipped with ground frame points to release an arriving train engine.
The station is on the north bank of the River Avon, and trains crossed a bridge immediately outside it. The locomotive shed was about half a mile from the station to the north side of the main tracks. The goods yard was on the opposite side of the tracks from this.
The Midland Railway's Bath branch had opened in 1869, but the river Avon bridge and the new station were not ready, so for a year the terminus was at a temporary station to the west of the river.
Parts of the distinctive glass roof were damaged during bombing raids in April 1942, and the glazing was not re-instated during railway usage after the war.
The atmosphere of the station was always powerfully nostalgic, and at most times of the day a short local train could be seen simmering in the platform waiting for departure time, often hours later. On summer Saturdays the station became very busy, passing numerous holiday trains between northern towns and Bournemouth; all of them had to be reversed in the station.
Ordinary services were local trains to Bristol St Philips and Clifton Down, later to Bristol Temple Meads, and S&D trains to Templecombe and beyond.
Green Park continues to be home to a Sainsbury's supermarket and a number of other shops and retail outlets. The former booking hall is now Green Park Brasserie. The old station building is used as a market hall, with some permanent stalls and boutiques and a farmers' market every Saturday. It occasionally acts as a venue for music and arts events and other performances and displays.
It is also the headquarters of envolve,
the organisation which runs Green Park and provides information about environmental issues and sustainable development.