Sun lights up Pantheon entrance on Rome’s birthday.Rome's birthday, known as Natale di Roma, falls on 21 April, and this year the city marks 2,774 years since its legendary founding by Romulus in 753 BC.One spectacular event that occurs in Rome's birthday is the Dies Natalis phenomenon at the Pantheon, which is currently closed due to Italy's covid-19 restrictions.Natale di Roma: the legends and traditions behind Rome's birthdayEach year on this date the midday sun enters the oculus of Rome's Pantheon and creates a disk of light that centres perfectly on the entrance doorway. The Pantheon in 10 amazing factsAt that exact time, the emperor would enter the temple, his body bathed in the intense golden sunlight. Last year Italy's culture ministry released a video of the phenomenon which it described as "one of history's first great special effects."

Rome's birthday, known as , falls on 21 April, and this year the city marks 2,774 years since its legendary founding by Romulus in 753 BC.One spectacular event that occurs in Rome's birthday is the Dies Natalis phenomenon at the Pantheon, which is currently closed due to Italy's  restrictions.

• Natale di Roma: the legends and traditions behind Rome's birthday

Each year on this date the midday sun enters the oculus of Rome's  and creates a disk of light that centres perfectly on the entrance doorway.

• The Pantheon in 10 amazing facts

At that exact time, the emperor would enter the temple, his body bathed in the intense golden sunlight. Last year Italy's culture ministry released a video of the phenomenon which it described as "one of history's first great special effects."