Astronomical Observatory of Lisbon
Astronomical Observatory of Lisbon, Astronomical observatory and museum in Alcântara, Portugal
The observatory stands at 140 meters above sea level, featuring a central circular room with a decorated vault supported by eight robust columns.
Construction began in 1861 under King Luis I's reign, with regular observations starting in 1867 and official recognition occurring on May 6, 1878.
The facility maintains its original 19th-century instruments, including chronometers, chronographs, and the historical Circle Meridian telescope for astronomical research and education.
Visitors can participate in guided tours through the museum sections, examining the evolution of astronomy from the 19th century to present times.
The observatory contains multiple pendulum clocks between column arches that have measured time throughout its operational history.
Location: Alcântara
Official opening: May 6, 1878
Elevation above the sea: 140 m
Website: http://oal.ul.pt
GPS coordinates: 38.71054,-9.18751
Latest update: March 18, 2025 07:52
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