Pittsburgh is known for its bridges, but it also has a fascinating history of tunnels. 

By: News Square

The city's first tunnel, the Liberty Tunnel, was built in 1924 to connect downtown Pittsburgh to the South Hills 

By: News Square

Since then, several other tunnels have been built, including the Fort Pitt Tunnel and the Squirrel Hill Tunnel. 

By: News Square

These tunnels have played an important role in the city's development. They have helped to improve traffic flow and make it easier for people to get around. 

By: News Square

I hope you enjoy learning about these fascinating structures!

By: News Square

They have also been the site of some interesting events, such as the birth of a baby in the Fort Pitt Tunnel in the 1990s. 

By: News Square