3.2.1 – natural structures 3.2.2 – man-made structures. TYPES OF STRUCTURES. 1) Shell structures – A shell is used to enclose, hold, contain or protect something.

Top 14 man-made structures you’ll never forget. By Ben Groundwater. Updated November 18, 2015 — 1.15pm first published at 1.11pm. Save. Log in, register or subscribe to save articles for later.

If you're a history lover or an architecture enthusiast, here are eight of the oldest man-made structures in India that deserve a spot on your travel list: 1. Barabar Caves, Bihar (3rd Century BCE) ...

BATON ROUGE, La. (BRPROUD) — LSU says new research shows that both LSU Campus Mounds are the oldest man-made structures in North America — going back as far as 11,000 years ago.

The most amazing man-made structures in Asia. By Belinda Jackson. December 21, 2016 — 5.40pm. Save. Log in, register or subscribe to save articles for later. Save articles for later.