Castle of Amieira do Tejo
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Castle of Amieira do Tejo is a castle located in Portugal, catalogued in the GeoNames topographic database dataset. The point has been assigned the stable identifier #429880 on SurveyingPedia and sits at an approximate elevation of 223.0 metres. Its coordinates in WGS84 are 39.508210°, -7.815990°, corresponding to 39° 30′ 29.56″ N, 7° 48′ 57.56″ W in the traditional degrees-minutes-seconds format. This page is a self-updating reference — all data is aggregated from public open sources and cross-checked periodically against the originating agency.
Professional surveyors, engineers, and topographers use points like Castle of Amieira do Tejo to anchor total-station traverses, verify GNSS/RTK solutions, calibrate levelling instruments, and validate survey deliverables against known coordinates. The record on this page is refreshed daily via automated pipelines that monitor the public sources for any updates, corrections, or status changes.
Coordinate formats
| WGS84 (decimal) | 39.508210, -7.815990 |
| WGS84 (DMS) | 39° 30′ 29.56″ N, 7° 48′ 57.56″ W |
| UTM zone (approx.) | Zone 29N (approx.) |
| Elevation | 223.00 m |
| Precise conversion | Open in coordinate converter → |
Geodetic context in Portugal
Portugal's national mapping agency maintains the official geodetic network used for cadastral and engineering surveys. Coordinates shown on this page are expressed in WGS84 (ETRF/ITRF-compatible) which is directly usable in most modern GNSS receivers. For cadastral work in Portugal you may need to convert to the local datum using the Coordinate Hub.
Browse the full list of indexed control points in Portugal from the country page.
Nearby benchmarks
The closest 6 indexed control points within roughly 50 km of this location:
Frequently asked questions
What is Castle of Amieira do Tejo?
Castle of Amieira do Tejo is a castle located in Portugal, catalogued in the GeoNames topographic database network. It has the public identifier #429880 and sits at an elevation of 223.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.
Where are the exact coordinates of Castle of Amieira do Tejo?
The position of Castle of Amieira do Tejo in WGS84 is 39.508210°, -7.815990° (decimal), or 39° 30′ 29.56″ N, 7° 48′ 57.56″ W in degrees-minutes-seconds. For planar surveys in Portugal this falls approximately in UTM Zone 29N (approx.).
How can I reach and visit this castle?
Use the satellite imagery above to see the surrounding area. You can open this location directly in Google Maps, Google Earth, Bing Maps, or OpenStreetMap using the buttons provided. Many geodetic points are accessible to the public; some are on protected or private land — check local regulations before any field visit. Always bring documentation or your credentials if you plan to use the marker for professional measurement.
Is this point verified and usable for professional surveying?
This record has been community-verified 0 times. Data quality depends on the source: NGS and official national agency points are typically centimetre-accurate, OpenStreetMap survey points are metre-accurate, and GeoNames topographic landmarks (peaks, hills) are reference-grade only. Always cross-reference with the original agency datasheet before using this point for cadastral, legal, or safety-critical work.