Thomas Jefferson was only 33 years old when he became the principal author of the declaration of independence. That along with being the third president of the United States makes for a pretty impressive resume. Pictured here is the Jefferson Memorial in Washington D.C. Beautifully situated at the edge the tidal basin and surrounded by cherry blossom trees which bloom to life each April, this memorial which is housed in a pantheon like domed structure is not a sight to be missed. The walls contain excerpts of Jefferson's most notable writings including an one from the declaration of independence.