Serious drought in Italy revealed the ancient bridge pillars across the Tiber River used to be used by Roman emperors.

The two pillars of the Nero's Bridge bridge were exposed on August 22 near the Vittorio Emanuele Bridge across the Tiber River in Rome, when Italy was suffering the most serious drought over the past 70 years.

Anthony historian Anthony Majanlahti said the bridge was built in the first century for the Emperor Nero to come to his garden near the Janiculum hill, near St. Peter's Square today.

The bridge collapsed in the third century, the traffic was headed to the nearby Sant'angelo Bridge, which took the pilgrims through Castel Sant'angelo to the Vatican.

Nero's Bridge bridge ruins in the Tiber River, in Rome, Italy on August 22.

Nero's Bridge was originally considered to have 4 pillars, but Majanlahti said the two pillars were dismantled in the 19th century to better circulate on the river.

The river water level is too low due to the drought spread throughout Italy, so we can see the bridge more clearly, Majanlahti.

During normal water levels, one of the bridges can often be seen in the dryest season, but this year can see two pillars.

The Italian government has issued an emergency in some areas because of the prolonged drought and the heat.

About two -thirds of the European continent is in a state of drought warning, maybe the worst drought in the past 500 years, according to the report of the international organization.