Difficult choice of locations, though:
 
	Westport: most operationally interesting with a junction to the Quay Line plus the "main" route over Altamont Street bridge
 
	Newport: fairly cramped site, plus the challenge of the Seven Arches viaduct and two small connecting bridges either side, and St. Patrick's above the station. 
 
	Mulrany: high up on the hillside, with the possible need to replicate the Great Southern Hotel on the adjacent site below
 
	Achill Sound: needs space for the sea around it, I'd have thought....