Laurium or Lavrio is a town in southeastern part of Attica, Greece and the seat of the municipality of Lavreotiki. Laurium was famous in Classical antiquity for its silver mines. The metallic silver was mainly used for coinage. The Archaeological Museum of Lavrion shows much of the story of these mines.
It is located about 60 km SE of Keratea and N of Cape Sounio. Laurium is situated on a bay overlooking the island of Makronisos in the east. The port is in the middle and gridded streets cover the residential area of Lavrio. GR-89 runs through Lavrio and ends south in Sounio.
Wikipedia https://en.wikipedia.org/wiki/Laurium
Coordinates 37°42'44.586" N 24°3'21.275" E