The Prospect Tower is a Grade II* listed building in the Cornwall local planning authority area, England. First listed on 19 October 1987. Folly tower.
The Prospect Tower
- WRENN ID
- crooked-spindle-nightshade
- Grade
- II*
- Local Planning Authority
- Cornwall
- Constituency
- South East Cornwall MP: Anna Gelderd (Lab)
- Country
- England
- Date first listed
- 19 October 1987
- Type
- Folly tower
- Address
- The Prospect Tower, Calstock
- OS grid reference
- SX 421 689
- Coordinates
- 50.49881, -4.22642
- Source
- Historic England listing
Description
The Prospect Tower is a folly tower, likely built in the late 18th century. It is constructed from slatestone rubble and features granite pinnacles. The tower has a triangular plan and is dished on all sides, creating an optical illusion of greater size. It is roofless and has had its internal stair replaced in the late 20th century.
The exterior consists of three stages, with a plinth and string courses, and a plain parapet topped with plain granite pinnacles. The first stage has a blind 2-centred arched opening on all sides, with one side featuring a door. The second stage includes a blind 2-centred arched window on each side. The third stage has a single 2-centred arched light with stone louvres on each side.
Local climate
The Prospect Tower sits in a wetter-than-average part of the UK, with an average of 1,000 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% of listed buildings.
It experiences an average of 17 freeze-thaw cycles a year, fewer than 84% of listed buildings. Of these, 7 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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- 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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