An '''obelisk''' (from the Greek work for "needle") is a thin, tall, four-sided monument having a small pyramid at the top. In ancient times there were made of a monolith, or single piece of stone. | An '''obelisk''' (from the Greek work for "needle") is a thin, tall, four-sided monument having a small pyramid at the top. In ancient times there were made of a monolith, or single piece of stone. |