Korskirken
Korskirken is a ruin in Oslo. Stand here, tap Check in, and the stamp is in your passport.
Save it as a wish now, and check in when you are there. No account needed to look around.

From Wikipedia
The Holy Cross Church (Norwegian: Korskirken) was a small medieval parish church for the northern part of the Old Town of Oslo, Norway. The ruin was rediscovered in 1922 and is now a part of Minneparken containing the ruins of the church and the larger St. Hallvard's Cathedral.
Read the whole article · Excerpt from the Wikipedia article “Holy Cross Church, Oslo”, licensed under CC BY-SA 4.0
Facts
From OpenStreetMap, where anyone can add and correct details.
Part of Historic sites in Oslo
228 places to collect
Traces of the past, close enough to touch.