The time has come for the skylines A.K.A cityscapes. I have selected 30 city profiles - from Sydney to New York - and have vectorized them using the acclaimed online vectorization tool vectormagic. Please feel free to use those vectors on your designs. There will be more themed vector packs.
This picture I saw long ago in a schoolbook. It should show the world view in the Middle Ages. In this view there's a point where the earth and the heavens met. The earth is a disc. And behind the firmament is a second sky (Cosmos, Kristallhimmel, Feuerhimmel) with the cosmic machinery. The wheel in a wheel is a symbol for God.
Now to some new things (for me): This is not a woodcut from the Middle Ages. It is a book-illustration of Camille Flammarion's 1888 "L’atmosphère. Météorologie populaire". More information here: http://en.wikipedia.org/wiki/Flammarion_engraving. The artist is unknown.
It is a wood engraving, but I think, its based on a ink drawing.
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain.
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See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher