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Union Canal Tunnel Park - Lebanon, Pennsylvania

  A canal linking Philadelphia with the Susquehanna River across southern Pennsylvania had been in the making for quite some time. This eventually gave birth to the Union Canal, which was built between Middletown, located along the Susquehanna River near Harrisburg, with Reading on the Schuylkill River, which winds its way to Philadelphia. During the canal's construction, several land features had to be dealt with, and in the case of Lebanon, Pennsylvania, it was more practical to build a tunnel through a hill than to build a series of locks. This gave birth to the Union Canal Tunnel. The Union Canal Tunnel was a critical link connecting the eastern and western branches of the 82-mile Union Canal, which was built through the ridge dividing the Quittapahilla Creek and Clark's Run just northwest of the center city of Lebanon, Pennsylvania. It is the oldest existing tunnel in the United States, dug through 729 feet of slate rock which contained veins of limestone. Drilling for the...

Star Gazers' Stone - Chester County, Pennsylvania

   One of the most important surveying markers in the United States, and perhaps, the world, is located in an otherwise unassuming field at Embreeville in Newlin Township in Chester County, Pennsylvania. That marker is the Star Gazers' Stone, which is the land marker that was used in 1764 by 18th century astronomers Charles Mason and Jeremiah Dixon to determine the true boundary between Pennsylvania and Maryland. At the time, the colonies of Maryland and Pennsylvania had a disputed border thanks to competing royal charters of the time. Maryland and Pennsylvania both claimed the land between the 39th and 40th parallels according to the charters granted to each colony, and this would have included the City of Philadelphia. The issue was unresolved until the British Crown intervened in 1760, ordering Frederick Calvert, 6th Baron Baltimore to accept a border agreement signed in 1732. As part of the settlement, the Penns and Calverts commissioned the team of English astro...

Pasco County Route 524

Pasco County Route 524 as presently configured is signed along Ridge Road from US Route 19 east to the Suncoast Parkway (Florida State Road 589).  Pasco County Route 524 was recently extended from Pasco County Route 1 (Little Road) to the Suncoast Parkway upon the recent opening of Phase 1 of the Ridge Road extension.  Pasco County Route 524 is planned to be extended east of the Suncoast Parkway to US Route 41 upon the completion of Phase 2 of the Ridge Road extension during 2025.  Part 1; the history of Pasco County Route 524 Modern Ridge Road from Little Road east to Moon Lake Road was a component of post-1945 Florida State Road 587 which can be seen on the 1958 United States Geological Survey Map of Plant City.  Florida State Road 587 is shown to have originated at Florida State Road 595/Congress Street in New Port Richey.  Florida State Road 587 from New Port Richey is shown following Massachusetts Avenue, Little Road, Ridge Road and Moon Lake Road to Florid...