The Tomioka Silk Mill, a UNESCO World Heritage site, rolled out a new tour this month featuring smart glasses technology.

Visitors to the Gunma Prefecture landmark can wear the devices at seven locations, including the cocoon warehouses and silk-reeling plant, for a computer-enhanced view of Meiji Era silk production at the site, which first opened in 1872.

The tours, which run twice per day, use smart glasses to display computerized images showing workers reeling silk from cocoons with tools of the era, while commentary plays through the earphones.

Visitors can experience a 360-degree view of the wine cellar in the normally off-limits Brunat House, the former living quarters of French engineer Paul Brunat, who supervised the site's construction.

A Japanese national treasure, the silk mill became the nation's 18th property on UNESCO's World Cultural Heritage list when it was added along with a cluster of other sites in June 2014. It was also the country's first modern industrial heritage site on the list.

The complex was a model for other silk mills in Japan, which eventually established itself as a leader in the global silk industry.