Stortorvet is a central square in Oslo. It was originally developed in the first half of the 18th century but almost all of the buildings from that time have disappeared. One exception is found at the corner of Møllergata where a timber-framed house has stood since around 1700. The church was built in 1694-97 but was substantially altered in 1848-50.
The three late 19th century buildings on the west side of the square were demolished in late 1950s/early 1960s and replaced with a modern building. They are photoshopped back into existence in the image above.
This image gives a closer look at the building on the corner with Grensen. It was built in the 1870's by architects Hermann Schirmer and Jacob Nordan. In this image is also visible the remaining house from 1700.
This building from around 1902 is actually still standing, but the facade has been modernised and the building is almost completely unrecognisable.
An earlier photoshop of the same building.
For more information about historic Oslo, buy my book, Det Tapte Kristiania, here.