The team then comes across an ancient obelisk of unknown origin.

Pompey's Pillar may have been erected using the same methods that were used to erect the ancient obelisks.

Explore this city that is peppered with ancient obelisks, crumbling palaces and a web of underground tombs.

One still stands, as the tallest surviving ancient obelisk on Earth.

Amongst the most impressive are eight ancient Egyptian and five ancient Roman obelisks spread throughout the city like chess pieces.

Solare (obelisk), an ancient Egyptian obelisk now in Rome.

The Pillars of Ashoka may have been erected using the same methods that were used to erect the ancient obelisks.

The crucifixion took place near an ancient Egyptian obelisk in the Circus of Nero.

One still stands, as the tallest surviving ancient obelisk on Earth; the other has broken in two and toppled.

It is nearly one third larger than any ancient Egyptian obelisk ever erected.