What is an Obelisks?

An obelisk (Greek ὀβελίσκος [obeliskos], diminutive of ὀβελός [obelos], "needle") is a tall, narrow, four-sided, tapering monument which ends in a pyramidal top. Ancient obelisks were made of a single piece of stone (a monolith). The term stele (plural: stelae) is generally used for other monumental standing inscribed sculpted stones not of classic obelisk form.