The Washington Monument is a 555-foot-tall obelisk in Washington, D.C. It is made of marble, granite, and sandstone. The monument is one of the world’s tallest stone structure and the world’s tallest obelisk. An obelisk is a tall stone pillar with a square base and sides that taper to a point like a pyramid. Download here.

Here are some great Civil War projects including making your own telegraph learning some morse code or building an ironclad ship