On Tuesday I got two postcards: one from Japan and one from Germany.
The card from Japan shows one of Okinoshima's attendant reefs. The Sacred Island of Okinoshima and its Associated Sites in the Munakata Region are since 2017 on the UNESCO World Heritage List.
With a nice stamp:
Japanese Tradition and Culture (from set of twenty) (issued 09-05-2018)
with First Day Special Postmark
Thank You very much Keiko!