Guinness Storehouse or Jameson Factory (if whiskey is more your style)

Trinity College, the campus and the stunning library

Temple Bar, with pubs, restaurants and good vibes

Kilmainhaim Jail, to discover the recent history of Ireland

St Stephen's Green, to read a book and relax in a beautiful park

Grafton Street, to go shopping

Howth Cliff  Walk, to have a stroll around the cliffs and fuel up with some local fish

Forty Foot or Vico Baths to take a dip in the sea - followed by a 'hot whiskey' in one of the local pubs to get warm