Christopher Columbus Biography - http://columbus-day.123holiday.net/christopher_columbus.html
This is a lengthy biography with many details about Colulmbus.

Christopher Columbus Biography - http://gardenofpraise.com/ibdcolum.htm
A brief biography of Columbus with some interesting facts and maps of his voyages.

Christopher Columbus Fact Monster - http://www.factmonster.com/ce6/people/A0812984.html
Check out the link "Historical Perspective" if you are looking for arguments for whether or not Columbus is a hero. 

Early Explorers - http://www.quia.com/jg/65717.html
Links are provided to games that require Java to work.

How Stuff Works - European Explorers- http://history.howstuffworks.com/european-history/european-explorers.htm
Excellent resources on most explorers. Describe who the explorer was, where they explored and many other interesting facts about them. Reading level is higher on this site.

Famous Explorers - Kid Info - http://www.kidinfo.com/American_History/Explorers.html 

Scroll down to the middle of the page to find links by explorer. Pictures, basic and detailed information provided.

Lewis & Clark - http://www.pbs.org/lewisandclark/
A site based on the PBS show produced by Ken Burns. Provides a map of the journey, information on the expedition and Native American tribes inhabiting the lands being explored.

Passages: A Treasure Trove of North American Exploration  http://epe.lac-bac.gc.ca/100/206/301/lac-bac/passages-ef/passages/index-e.html
Click on "Alphabetical List" for a complete list of explorers that includes: Cabots, Cartier, LaSalle, Soto, and Verrazzano.

Portuguese Explorers - http://www.fernandocandido.com/portgen/portexplorers.html
A long list of links with many explorers is available on this site.

Celtnet Recipies - History of the Spice Trade - http://www.celtnet.org.uk/recipes/spice_trade.php
A more detailed account of the role spices played in exploration and daily life.

The Spice Trade - A Taste of Adventure - http://www.theepicentre.com/Spices/spicetrd.html
A summary of the importance of spices and their link to exploration.

The History of the Spice Trade - http://www.helium.com/items/323617-the-history-of-the-spice-trade
A very brief history about the value of spices.

The Ancient Spice Trade - http://www.classics.uwaterloo.ca/labyrinth_old/issue82/The%20Ancient%20Spice%20Trade.pdf
Read this account of the dangers of the spice trade both real and mythical.

Leif Erickson - http://www.mnc.net/norway/ericson.htm
A short description of Erickson's voyage to North America.

Famous Explorers - Leif Erickson - http://www.famousexplorers.net/page4.html
An explanation of why Leif Erickson is famous due to his discoveries is provided on this page.

Nova: The Vikings- http://www.pbs.org/wgbh/nova/vikings/
A great site to learn about vikings and their lifestyle.

Vikings and the North Atlantic Saga - http://www.mnh.si.edu/vikings/start.html
A wonderful site with information about Vinland.

Coming to America: Who was first? - http://www.npr.org/templates/story/story.php?storyId=15040888
Discusses evidence that is available to try to decide who was the first to discover America.

Zoom Explorers - http://www.enchantedlearning.com/explorers/
A great site to visit for brief biographies and collections of explorers that can be searched by the area that was explored or time of exploration through a timeline.

Myths and Exploration

The Round Earth and Christopher Columbus- http://www-istp.gsfc.nasa.gov/stargaze/Scolumb.htm
This page discusses what Colulmbus new about the earth and what was commonly known about the shape of the earth.

The Myth of the Flat Earth - http://www.veritas-ucsb.org/library/russell/FlatEarth.html
The author argues that it was well know during Columbus' time that the earth was round.

Kraken - http://www.mythicalrealm.com/creatures/kraken.html
Check out this mythical sea monster on this site.

Kraken - http://monsters.monstrous.com/kraken.htm
Find out about this ancient monster from the deep.

Leviathan - http://www.deliriumsrealm.com/delirium/articleview.asp?Post=111
Discover this ancient monster and find out the basics.

BBC News Sea monster whale fossil unearthered - http://www.bbc.co.uk/news/10461066
Discovery of the remains of an ancient aggressive huge whale.

Why Did Eary Explorers Put Sea Monsters on Maps - http://wiki.answers.com/Q/Why_did_early_explorers_put_sea_monsters_on_their_maps

MrNussbaum.com - Legends Goals and Destinations - http://www.mrnussbaum.com/explorers/legends.htm
Scroll down to the section on "sea monsters" for info on sea monsters and flat earth.

Cities of Gold - http://www.pbs.org/weta/thewest/program/episodes/one/cities_ofgold.htm
This site discusses Coronado's quest for the seven cities of gold.

Encounters in the Americas - Seven Cities of Gold - http://www.watertown.k12.ma.us/cunniff/americanhistorycentral/04encountersintheamericas/The_Seven_Citi.html
A brief explanation of this myth can be found on this page. 

Seven Cites of Gold - http://www.southernnewmexico.com/Articles/GeneralInterest/TheSevenCitiesofGold.html
A brief history of the myth is provided here.

Eldorado - City of Gold - http://www.freewebs.com/tkoseldorado/thelegendofeldorado.htm
An short explanation describing Eldorado and the myth associated with it.

The Secret of El Dorado -http://www.bbc.co.uk/science/horizon/2002/eldorado.shtml
A discussion of the myth and its origins.

The Fountain of Youth: Myth or Fact - http://longevity.about.com/od/longevitylegends/p/fountain.htm
An exploration of the truth behind the story.

Misconceptions and Myths Related to the Fountain of Youth - http://www.newworldexplorersinc.org/FountainofYouth.pdf
A higher level reading discussion about the Fountain of Youth.

Fountain of Youth - Wikipedia -http://en.wikipedia.org/wiki/Fountain_of_Youth (higher level reading)
Check the facts on this site which provides and extensive history of the myth of the Fountain of Youth.

The Ocean: Culture, Myths and Legends - http://library.thinkquest.org/21035/culture.html Covers several myths and legends regarding the ocean and lists mythical sea creatures that sailors might fear.