The demolition of the citadel was a half-hearted job, however, and there's plenty left to see today, from ramparts and castle walls to ruined chapels, stone stairways, and quaint cobbled streets.
There are castle walls, ruined chapels, stairways, and more to see. 
mnli hypothesis: There are castle walls, ruined chapels, stairways, and more to see.  premise: The demolition of the citadel was a half-hearted job, however, and there's plenty left to see today, from ramparts and castle walls to ruined chapels, stone stairways, and quaint cobbled streets.