Oslo's cathedral, right by the main street and the old market arcades. Worth stepping into if you're passing; the painted ceiling is the highlight. By European standards it's a modest cathedral, and not worth a special journey.
🕒 How long
20–30 minutes
👤 Suits
Anyone walking through the centre
🗓️ Season
Indoor. Opening hours shift around services, so check if you're making a trip for it.
This is personal opinion, not a sponsored listing.