This cache owes its name to its location. Coimbra is the fourth largest city in Portugal. It was first settled by the Romans and reached its peak when it was the capital of Portugal from 1131 to 1255. The University of Coimbra, founded in 1290 is the oldest in Portugal and is a UNESCO World Heritage Site.
This cache may be found at the site of the former intersection of Range Road 3045 and Township Road 372. A Google search reveals that 3045-372 is the postal code for a part of Coimbra, Portugal. Feel free to confirm this while you are waiting for 5:30 pm Friday, May 27th to roll around. That's the earliest that you can find and log this hide.