Remains of Neptune's Temple or Arx Ruohim is a Grade II listed building in the Thanet local planning authority area, England. Folly.

Remains of Neptune's Temple or Arx Ruohim

WRENN ID
burning-belfry-winter
Grade
II
Local Planning Authority
Thanet
Constituency
East Thanet MP: Ms Polly Billington (Lab)
Country
England
Type
Folly
Address
Remains of Neptune's Temple or Arx Ruohim, Kingsgate Bay Road, Broadstairs and St. Peters
OS grid reference
TR 395 709
Coordinates
51.38692, 1.44119
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The remains of Neptune's Temple, also known as 'Arx Ruohim', are located on Kingsgate Bay Road. This structure dates from the late 18th century and is one of Lord Holland's follies. It was a miniature version built in flint, inspired by the forts of Henry VIII, such as those at Camber and Deal. The original design included a central tower made of red brick faced with chalk blocks, which once supported a statue of Neptune. An inscription falsely claimed that the monument was built in AD 448 by King Vortigern, referring to it as the Arx Ruohim. Currently, only the flint plinth remains, which is approximately 10 feet high, quatrefoil in shape, featuring a stone band near the top and arrow slit windows.

Local climate

Remains of Neptune's Temple or Arx Ruohim sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 67% of listed buildings.

It experiences an average of 8 freeze-thaw cycles a year, fewer than 94% of listed buildings. Of these, 4 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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