[5] The bivallate hillfort is protected on the south and east by two parallel ramparts and an unusual type of inturned entrance 11 yards (10 m) wide.

The third and final phase was the re-building of the rampart in the post-Roman period, dating as late as 530 AD suggesting early Saxon re-occupation of the hillfort.

The road existed between c. 79–410 AD to link the garrison of Deva to Wilderspool, which produced pottery that supplied the north west of England.

In fact, the name 'Helsby' is likely to be derived from the Viking name Hjallr-by, meaning "the village on the edge" (placenames with the suffix "by" often denote Viking/Danish origins, e.g. Derby, Grimsby, Whitby, etc.).

The earliest mention of the original, timber Old Hall, was in a contract for the construction of additional work in stone in the mid 15th century.

[13] Helsby Hill was the location of a rare public execution when William Henry Clarke was hung in chains on 21 April 1791 after being convicted of robbing the Warrington Mail.

Services are operated at approximately hourly intervals by Transport for Wales to Manchester Piccadilly and in the other direction to Chester and Llandudno.

There is also a regular Transport For Wales service connecting Helsby from Chester to Liverpool Lime Street during the day and early evening as of 2024.

North west of Helsby, near the village of Ince, landowners The Peel Group are developing a 54 hectares (130 acres) industrial site on marshland.

In 2009 a public inquiry gave permission to build a biomass power station,[17] which opened in 2018[18] as part of the Protos "energy and resource hub".

Helsby Hill has steep cliffs on the northern and western sides and is a prominent landmark rising above the Cheshire Plain and overlooking the Mersey estuary.

It is the site of Helsby hill fort, an ancient British hillfort, and more recently acquired a concrete pillar trig point on its summit.

Numerous footpaths, running from the public roads encircling the hill, give ready access for walkers.

One such path, known as Hill Road, runs through a large sandstone cutting, which was the route of a railway in the Second World War.

The landmarks of Liverpool can clearly be seen beyond the Helsby marshes, Stanlow Oil Refinery, the Kemira fertiliser plant and the Manchester Ship Canal.

[citation needed] Two quarries in Harmers Wood, southwest of Helsby Hill, feature over sixty climbs of varying difficulty.

It contains a range of trees including oak, sycamore, rowan, silver birch, willow and beech—some of which grew naturally during the site's period of dereliction, and some of which were planted specifically in preparing the woodland park[citation needed].

The site features exposed rock walls and a tunnel, which enable sandstone formations from the Triassic period (251–199 million years ago) to be viewed.