when was the first peramid built in Egypt, and by whom?

Hello itamarmo and thank you for your question.

Imhotep was responsible for building the first pyramid in Egypt (known
as the Step Pyramid) in about 2700 B.C. and it was built for the
Pharaoh Zoser.

"2950-2575 BC The first pyramid is built - the Step Pyramid at Saqqara"
http://www.bbc.co.uk/history/ancient/egyptians/timeline.shtml

"Imhotep lived in Egypt during the reign of Pharaoh Zoser of the Third
Dynasty. As a great architect and the prime minister of the Pharaoh,
he was responsible for the construction of the first pyramid (the tomb
of Zoser at Saqqara) and of the first Egyptian temples built of
stone."
http://www.utmb.edu/tour/pdfs/McGovern_Hall_Brochure.pdf

"Imhotep who was also the famous architect who supervised the building
of the first pyramid at Sakkara, the Step Pyramid, which he built for
Zoser in about 2700 B.C."
http://farms.byu.edu/display.php?table=transcripts&id=110

You can see numerous pictures of the Step Pyramid here:
http://images.google.com/images?q=%20%22step%20pyramid%22&hl=en&lr=&sa=N&as_qdr=all&tab=wi

Thank you for your question, and if you need any clarification of my
answer, do not hesitate to ask before rating my answer.

Very best regards.

THX1138

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