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What Lies Behind the Wall…? (self-led trail)


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Holy Trinity Church, Trinity Green, Haslar Road, Gosport, PO12 1HL

..after 12 tonnes of rubbish were removed together with ivy and brambles, No.1 Bastion, emerged!
As part of the Gosport Lines which protected the town, it was the first section to undergo restoration under Gosport’s Heritage Action Zone.

This Bastion was constructed, by convict labour, in about 1802. The Gosport Lines are an exceptionally rare system of 17th to mid-19th Century earthwork defences that encompassed the town and several harbour-based military sites.

Explore Trinity Bastion, officially known as No.1 Bastion (and by many older locals as ‘Vicar’s Bank’ or ‘Tragedy Bank’) in this self-led trail prepared for you by the ‘Friends of Bastion No 1’. The site includes the grassed earth bank (ramparts), the gun emplacements on the top of the bank, the pathway at the bottom of the bank, the moat, and the caponier (a covered passage across the ditch).

The Bastion is a Scheduled Ancient Monument and the moat is designated as a SINC Site of Importance for Nature Conservation so there is plenty to see and enjoy in the structure and the environment.

Pick up your self-led trail sheet from the exhibition stand within Holy Trinity Church during the advertised trail times. If you want to ask any questions or get more detail about things you encounter on the trail, then the ‘Friends’ will be around to offer lots more information.

You can also pick up a self-led trail sheet from Gosport Tourist Information Centre (by the bus station) 0930-1700 Mon-Sat during the HODs festival.

Allow 30 mins to walk Bastion No1.


Friday 9 September: 1000 – 1600
Saturday 10 September: 1000 – 1600
Sunday 11 September: 1400 – 1600
Friday 16 September: 1000 – 1600
Saturday 17 September: 1000 – 1600
Sunday 18 September: 1400 – 1600


No booking required


The upper areas of the Bastion may not be suitable for wheelchairs or buggies due to inclines and uneven surfaces. However, the lower areas are accessible to all. Parking on road in Trinity Green or Church Path car park, also long stay car park off Haslar Road. Drop-off & pick-up in front of Church for disabled visitors. There are toilets, including accessible, within the Church. Refreshments are available close by in the High Street.

accesible toilets Toilets Service dogs welcome

COVID-19 Considerations

This event will run in line with local & national government guidelines at the time of the festival.


We advise suitable footwear for grass and uneven ground. Please read all advisory notices at the site. Extra care should be taken if the ground surface is wet. Under 16’s should be accompanied by an adult.


Friends of Bastion No 1