Saenamteo
Seoul, South Korea
Saenamteo is a location on the north bank of the Han River in Seoul, South Korea. During the Joseon period it was a sandy area outside the city walls. that was used punishment of political prisoners, including Roman Catholic believers, priests, and missionaries among the Korean Martyrs. A memorial church, consecrated in 1987, now stands on the site and houses a Martyrs' Memorial.
Church data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).