Palace Garden

Soot and steam

According to my 1943 copy of 'British Locomotive Types' this inside cylinder 0-8-0 was originally designated class G2 on the London and North Western Railway prior to being grouped in class 7F of the London, Midland and Scottish Railway, presumably in 1923.  

Here is its datasheet.

Inversion

The Keep

Carlisle castle.  Note the beginning of a long, shallow staircase on the right.  When gunpowder and cannons overtook swords and archers on the battlefield the keep was no longer provided suitable defense against attacking forces.  You didn't need to scale the enemy's walls if you could blow them down from afar.  

  The staircase was added to enable the movement of artillery to the roof of the keep. On the inside, a wall was built, bisecting the keep in order to provide reinforcement for the guns on the roof.  The result is a series of rather odd, narrow rooms.  Not the sort of place you would find comfortable for very long.