At the given coords you'll find a 6-digit number probably just above your head. Enter that number into Certitude to receive coords to the final stage of this multi. To access this final stage (and that of Union Meeting House 1), please drive or walk to Winters Street, turn left, go one block, then turn left onto N. Church Street, and enter the Westminster Cemetery, which was first known as the Union Meeting House Cemetery, which dates back to at least 1790, when Christian Yingling was buried in this cemetery. This cemetery is now open from 10am until sunset. In addition to UMH 1 and 2, there are many other caches nearby, including at least two Adventure Labs which are within easy walking distance from the given coords. Perhaps you could spend some time getting acquainted with downtown Westminster and its history.
You can validate your puzzle solution with
certitude.