This incredible example of a Manueline doorway belongs to the Igreja da Conceição Velha in Lisbon. It's easy to miss as the building is sandwiched between two others in a fairly narrow street just off Praca Comercio.
The church dates back to around 1500 and was once the second largest in Lisbon. What you see today is very much a shadow of the former building as it was devastated by the great earthquake of 1755.
To give an idea of the scale and grandeur of the original church it is worth noting this was originally the side entrance and the church lay at a right angle to the current plan.