Ancient artifacts were discovered during construction on a Greek subway system, Fox News reported on Tuesday.
The construction project in Thessaloniki, Greece, began in 2003 and has led to thousands of archeological finds ranging from Roman-era roads to Greek mosaics.
"This project offers a remarkable blend of the ancient and modern, integrating archeological heritage with metro infrastructure," said transport and infrastructure minister Christos Staikouras, Fox News cited.
Many of the artifacts found during the excavation will be incorporated into the design of the subway station, on display for incoming passengers.
More expensive project
The discovery of these artifacts has reportedly added expenses to the decades-long metro project, including causing delays in the construction in order to preserve the archeological finds.
"The project faced substantial delays and many challenges, including over 300,000 archaeological finds, many of which are now showcased at various stations along the main line," Staikouras explained.
Fox News reported that this new metro, with self-driving trains and screen doors on the platforms to prevent anyone from falling on the tracks, has cost $3.1 billion to complete.