Fort Mitchel was constructed in 1804
The notorious Punishment Block and children's prison were hell on earth for the unfortunate convicts on Spike Island.
Mitchel Hall was completed in 1851 and has been used as a church, barracks, dance hall and riot training room!
The Spike Island Gun Park is Ireland's largest covered military park with tanks, cannons and guns.
These impressive 6 inch guns were buried deep in the fort by the Irish army and could fire a shell 12 miles!
A silver plated chalice and paten were used in the convict chapel on Spike Island between 1848 and 1883.