Nicknamed the "Italian Versailles," after the royal palace near Paris, the Italian Royal Palace of Caserta, a UNESCO site boasting 1,200 rooms, 1,742 windows and 123 hectares (303 acres) of lush gardens, a long-neglected architectural jewel near Naples, is being returned to its former glory through a vast restoration project, partly financed by the European Union's recovery fund.

The palace was built on the orders of the King of Naples, Charles of Bourbon, with work beginning in 1752 under the direction of architect Luigi Vanvitelli.

But it fell into neglect after Italy's unification at the end of the 19th century and was used rarely after that, such as when it served as the Allied headquarters during World War II.

From restoring the facades to reviving the gardens and repairing the gates, remedying the ravages of time is a titanic task.

Efforts made so far were rewarded last week when the palace won a third star – the highest accolade – in the prestigious Michelin Green Guide to Southern Italy.

Philippe Orain, the Michelin Green Guides' director, told Agence France-Presse (AFP) the restoration so far was "remarkable."

The palace has also earned points for its collection of contemporary art, showcased in the royal apartments and its decision to open to visitors in the evenings and at Christmas.

The third star lifts the palace and its gardens, complete with reflecting pools and a gushing waterfall, to the level of the Pompeii archaeological site.

"It is a recognition that we hope will make us known throughout Europe and the world," said the palace's director Tiziana Maffei.

'Expression of power'

Once home to Queen Marie-Caroline, Marie Antoinette's sister, the palace was designed to be "an expression of power but also cultural prestige," Maffei said.

The restoration comes with a stiff price tag, but the project has received around $27 million from the European post-pandemic recovery fund.

Maffei said it was "very little" compared to the total costs, but it would help restore the aqueduct, which carries water to the palace's fountains, canals and basins over 40 kilometers (25 miles).

The palace serves as a location for film shoots, from "Star Wars" to "Angels and Demons," which help lift its profile – and can raise unexpected extra funds too.

Maffei cites Tom Cruise, who she says paid for the curtain in the palace theater to be restored while he was there filming "Mission Impossible."

Visitors to the royal apartments first climb a vast staircase under the fierce gaze of marble lions.

Above them is an immense dome, below which lies a hidden platform, where musicians were once housed out of sight to play as distinguished guests arrived.

Beyond the palace lie the Old Woods and the English Garden, one of the few great European gardens still intact, boasting temples, lakes and some 200 or so different species of rare and exotic plants.

U.K. tourist Terry Thompson, on holiday with her husband, says the revived royal palace now rivals even the imposing Vatican in Rome.

"I can honestly say that here it is as beautiful, if not more beautiful," she said.

"It's superb: the colors, the paintings, the ceilings, the gilding ... it's really worth a visit."