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All Spain Alicante Alicante Zero Level
AO Edited

Alicante Zero Level

Once used to calculate the various levels around the country.

Alicante, Spain

Added By
Javier Pascual Aguilar
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First rung.   Xavixavir / Atlas Obscura User
Zero Level   Luis Morato / Atlas Obscura User
Plaque and zero lever first rung.   Xavixavir / Atlas Obscura User
Spanish zero level.   Xavixavir / Atlas Obscura User
Alicante zero level.   Xavixavir / Atlas Obscura User
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Why is height in Spain measured with respect to the sea level in Alicante? When the altimetric survey of Spain was projected at the end of the 19th century, the measurements confirmed that the difference in sea level between low tide and high tide was the smallest on the Alicante coast.

For this reason, the altimetric survey of the Madrid-Alicante itinerary began in 1871, establishing the first signal on the first rung of the Alicante Town Hall staircase. In Madrid, the Astronomical Observatory was taken as the altimeter point. The signs were identified with the nomenclature N.P.1 for Alicante and N.P.26 for Madrid.

After years of observing the sea level in Alicante, the zero level was set. Thus, signal N.P.1 was assigned a height of 11,177 (3,407 meters), which allowed obtaining that of signal N.P.26, which turned out to be 625,562 meters. This serves as an origin to calculate all the other levels of the country.

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Know Before You Go

The zero level – the sea level – is located in the Alicante town hall and there, at the entrance, at the foot of Dalí's San Juan is the plaque that indicates the zero level which is used in Spain.

Please check the hours of the town hall before you go. It is free to visit and there are self guided tours of the rest of the town hall facilities during the day

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Xavixavir

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Luis Morato

  • Luis Morato

Published

September 7, 2022

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Alicante Zero Level
1 Plaça de l'Ajuntament
Alicante
Spain
38.345307, -0.481279
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