Head to the Pantheon temple in central Rome – the entrance is behind the grand portico of 16 columns. Collect your audio guide at the desk inside and begin a journey through the building's 2,000-year-old history.

Find yourself within one of the only ancient Roman buildings in the city that has remained almost intact over the centuries. Emperor Hadrian built it in 125 A.D. on the destroyed site of a 27 BC temple commissioned by Marcus Vipsanius Agrippa during the reign of Augustus.

Circle the hall via 15 listening points – a walk through the historical timeline of the building, including its origins as a temple dedicated to all the gods of Pagan Rome, conversion to a Christian church by Pope Boniface IV in 609 A.D. and its use as a mausoleum.

Be amazed at the architectural details of the rotunda. Beyond matching measurements and precise layouts, Imperial Romans also incorporated symbolic meaning throughout the entire structure.

To accompany your audio trip, you'll get a handy map to locate further points of interest inside the basilica, including frescoes and sculptures, and the tombs of Renaissance artists.

Remember to look up at the monumental dome – the biggest of its kind in the ancient era. The ray of light from its oculus illuminates a different part of the Pantheon hall as each minute passes.