An aid for navigation and pilotage at sea, a lighthouse is a tower building or framework sending out light from a system of lamps and lenses or, in older times, from a fire. More primitive navigational aids were once used such as a fire on top of a hill or cliff (see beacon).

Because of modern navigational aids, the number of operational lighthouses has declined to less than 1,500 worldwide. Lighthouses are used to mark dangerous coastlines, hazardous shoals away from the coast, and safe entries to harbors.

Perhaps the most famous lighthouse in history is the Lighthouse of Alexandria, built on the island of Pharos in ancient Egypt. The name of the island is still used as the noun for "lighthouse" in some languages, for example: French (phare), Italian and Spanish (faro), Portuguese (farol), Romanian (far) and Greek (φάρος). The word "pharology" (study of the lighthouses), is also derived from the island's name.

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@himynameislee lighthouses rule
idied69times (cory lee) Fri, 20 Nov 2009 06:21:00 -0000
@himynameislee lighthouses rule
The stars are our lighthouses in this dark universe.
outitui (outitui) Fri, 20 Nov 2009 05:43:23 -0000
The stars are our lighthouses in this dark universe.
Lighthouses rule.
Maggiedoodle90 (Maggie Neil) Fri, 20 Nov 2009 05:20:47 -0000
Lighthouses rule.
has not time for haunted lighthouses. Still.
sixofrock (Paul ) Fri, 20 Nov 2009 04:33:34 -0000
has not time for haunted lighthouses. Still.
NEW SONG! LIGHTHOUSES UP NOW! TAKE A LISTEN :] !
HonourCrest (Honour Crest) Fri, 20 Nov 2009 04:11:53 -0000
NEW SONG! LIGHTHOUSES UP NOW! TAKE A LISTEN :] !
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closing_bid (Closing Bid) Fri, 20 Nov 2009 03:09:28 -0000
Stamps Complete Set Lighthouses Stamp First Day Cover Cachet - Crescent City,CA - $12.00 http://bit.ly/3oYEk7 #ebay #stamps

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