Marconi Memorial is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 9 October 1984. Commemorative memorial.
Marconi Memorial
- WRENN ID
- nether-lancet-sorrel
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- St Ives MP: Andrew George (LD)
- Country
- England
- Date first listed
- 9 October 1984
- Type
- Commemorative memorial
- Address
- Marconi Memorial, Mullion
- OS grid reference
- SW 663 194
- Coordinates
- 50.02891, -5.26422
- Source
- Historic England listing
Description
The Marconi Memorial is a commemorative structure erected in 1937 by the Marconi Company of London, designed by Kelly and Co (Cramb Bros) Ltd of London. It is made of granite ashlar and features a stepped square base. The memorial has a thick, slightly tapered shaft with moulded corners that is stopped at the base, resting on a square plinth adorned with commemorative plaques on each side. At the top of the shaft is an emblem depicting a globe within a double triangular frame. The four plaques on the plinth honor G. Marconi and his research experiments conducted at the Poldhu Wireless Station from 1900 to 1933, which was located 100 yards northeast of the memorial. This station was significant for transmitting the first wireless telegraphy signals across the Atlantic on December 12, 1901. Additionally, in 1923 and 1924, C. S. Franklin, the inventor of the Franklin Beam aerial, directed his short wave wireless beam transmission to Marconi in the South Atlantic from this station.
Local climate
Marconi Memorial receives an average of 910 mm of rain a year. This makes it wetter than 68% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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.
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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