What: Come and sign the postcard before we post it off to Geocaching HQ, right as the event finishes, in the neighbouring postbox.
Where: At the bench, on the corner of Silbury Boulevard and Saxon Gate, near the artwork The Conversation. Or under the neighbouring porte cochère if the weather is wet.
When: Thursday 2nd October, 6pm to 6:30pm. Free parking nearby after 6pm, and before sunset at 6:38pm.
Why: To recognise World Postcard Day!