The Downs information
Near the Clifton Suspension Bridge, the grassy parks of Clifton Down and Durdham Down (often referred to as just the Downs) make a fine spot for a picnic. Nearby, the small Clifton Observatory houses a camera obscura and a tunnel leading down to the Giant's Cave , a natural cavern that emerges halfway down the cliff with dizzying views across the Avon Gorge.
At the time of writing, the observatory was up for sale for a cool £2 million – so things may have changed by the time you visit. Ring ahead to check.