The idea sounds fun but usually I'm in a hurry to get to the next lighthouse and wouldn't want to track down the post office.

In one PCE, I sent cards from Peggy's Cove, Nova Scotia and had them stamped from the post office since it is inside the lighthouse.

The stamped date turned out to be very unique and extremely sad for me and the rest of the country. I had just walked outside from the post office inside the lighthouse when a man walked by and told people to go listen to the radio.

The date was 9-11-01. My cards were stamped just as the first tower was hit by the plane.