Best Hidden Gems in West Sussex
Written by UK Hidden Gems Editorial
Updated 5 August 2026
The best hidden gems in West Sussex are Racton Ruin, Ouse Valley Viaduct, Iping Common Pools, Woolbeding River Garden, Swanbourne Lake, The Serpent Trail and Cowdray Ruins.
West Sussex spreads from the chalk ridges of the South Downs to the wooded heaths of the western Weald and the rivers that thread down towards the coast. It is a county of quiet lanes and long views, where ruined follies and Tudor mansions stand among farmland, ornate railway viaducts stride across river valleys, and National Trust gardens shelter rare plants.
Many of its finest places lie a little off the main roads, waiting for those who take the trouble to seek them out. Around Midhurst alone you can find the roofless shell of Cowdray, the new glasshouse at Woolbeding River Garden and the heaths crossed by the Serpent Trail.
Further south there are lakeside walks at Swanbourne near Arundel, birds and butterflies on Iping Common, and the receding arches of the Ouse Valley Viaduct near Balcombe. Whether you come for walking, wildlife, history or gardens, there is a great deal to reward the curious traveller.
Here are seven of the best hidden gems to seek out in West Sussex.
Racton Ruin
Photo: Colin Smith via Geograph.org.uk
Racton Ruin is a ruined eighteenth-century folly tower standing among farmland in the South Downs near Chichester. Triangular at its base with a round turret at each corner, it rises as a roofless, floorless brick shell, most of the flint that once faced it now gone, and it can be seen for miles.
It was built between about 1766 and 1775 for the Earl of Halifax, and once stood four storeys and eighty feet tall, though its exact purpose, whether summerhouse or harbour lookout, was never recorded. It stands on private land and has a local reputation as an eerie, haunted spot.
Seek it out to spot this gaunt landmark from nearby paths.
Ouse Valley Viaduct
Photo: Dave Spicer via Geograph.org.uk
Ouse Valley Viaduct carries the London to Brighton railway high over the River Ouse near Balcombe, an ornate brick viaduct still in daily use. Its thirty-seven arches are carried on piers pierced with tall oval openings, which line up when you stand beneath to give a well-known receding view through the stonework.
Italianate stone pavilions stand at each end and a balustrade runs along the top. It was built between 1839 and 1841 to the designs of John Urpeth Rastrick, with decorative detailing by David Mocatta, and is reached by footpaths and lanes near Balcombe, viewed from below.
Seek it out and stand beneath the arches for that celebrated view.
Iping Common Pools
Photo: Ian Hawfinch via Geograph.org.uk
Iping Common Pools sit on Iping Common, an area of lowland heath west of Midhurst that forms part of the Iping and Stedham Commons nature reserve run by the Sussex Wildlife Trust, with a couple of small ponds among the heather. Open heather and gorse grow on sandy soil, with birch and Scots pine and boggy hollows where sundew grows.
It is home to nightjar, woodlark, Dartford warbler and the silver-studded blue butterfly, and it is dark enough at night to be a recognised stargazing site. Paths run in from Elsted Road.
Seek it out for heathland wildlife by day and dark skies after dusk.
Woolbeding River Garden
Photo: Roger Cornfoot via Geograph.org.uk
Woolbeding River Garden is the newest part of Woolbeding Gardens, a National Trust garden on the Rother just north of Midhurst, where entry is by timed booking. Its centrepiece is a ten-sided glasshouse designed by Heatherwick Studio, whose glass petals open out over a few minutes into a crown shape to shelter subtropical plants, set within a Silk Route garden of hundreds of species arranged by region.
Older parts of the grounds include formal garden rooms and a landscaped riverside walk with a rill, waterfalls, a grotto and views over the river meadows. Seek it out, and remember to book your timed entry ahead.
Swanbourne Lake
Photo: Paul Gillett via Geograph.org.uk
Swanbourne Lake lies in a dry chalk valley on the northern edge of Arundel, just north of Arundel Castle, on the site of a former mill. A flat, level path loops around the water, and rowing boats can be hired in the warmer months, with a tearoom, ice-cream kiosk and putting green near the entrance off Mill Road.
Ducks and swans gather on the lake. The Wildfowl and Wetlands Trust's Arundel wetland centre is a short way further up the same road.
Seek it out for an easy waterside stroll beneath the castle.
The Serpent Trail
Photo: Colin Smith via Geograph.org.uk
The Serpent Trail is a long-distance walking route of about 64 miles that winds across the greensand heaths of the western Weald between Haslemere and Petersfield, waymarked with a snake motif. This point is on Black Down, the trail's high point at 280 metres and the highest hill in Sussex, a heather-and-woodland plateau owned by the National Trust with a well-known view south from the Temple of the Winds.
The trail deliberately snakes from heath to heath, taking in the country around Midhurst and Petworth and finishing at Heath Pond in Petersfield. Seek it out for a long ramble across the western Weald's heaths.
Cowdray Ruins
Photo: Kurseong Carl via Geograph.org.uk
Cowdray Ruins are the ruined shell of a grand Tudor mansion on the edge of Midhurst, beside the River Rother. The house was gutted by fire in 1793 while under repair, and never rebuilt.
What stands today includes the tall gatehouse, the porch of the great hall and the kitchen tower, in warm stone above the water meadows. After years of conservation the ruins were opened to visitors in 2007.
Seek them out to wander the shell of one of Tudor England's great houses.
FAQs
What are the best hidden gems in West Sussex?
Highlights include Racton Ruin near Chichester, the Ouse Valley Viaduct near Balcombe, the Tudor shell of Cowdray at Midhurst and Swanbourne Lake by Arundel. Together they span follies, viaducts, ruins, gardens and heathland across the county.
Do I need to book to visit Woolbeding River Garden?
Yes, entry to Woolbeding River Garden is by timed booking. Its centrepiece is a ten-sided Heatherwick glasshouse whose glass petals open into a crown shape, set within a Silk Route garden, so it is worth arranging your visit in advance.
Where is the Ouse Valley Viaduct?
The Ouse Valley Viaduct carries the London to Brighton railway over the River Ouse near Balcombe, and is also known as the Balcombe Viaduct. It is reached by footpaths and lanes near Balcombe and best viewed from below.
Conclusion
West Sussex quietly rewards those who leave the main roads behind. In a single county you can walk to a lonely folly tower near Chichester, stand beneath the soaring arches of the Ouse Valley Viaduct, and follow the Serpent Trail across the heaths of the western Weald.
Around Midhurst the Tudor ruins of Cowdray and the modern glasshouse at Woolbeding sit within easy reach of one another, while Swanbourne Lake and Iping Common offer gentle water and heathland close to Arundel and beyond. Each place has its own character, from ruined grandeur to living gardens and wide downland views, and each is worth the short detour it takes to reach.
For walkers, wildlife lovers and history seekers alike, these are the best hidden gems to seek out in West Sussex.
