Guia de cidade
Dublin DUB: What to Do on a Layover
Temple Bar in 3 hours: live trad music at noon, Guinness, Grafton Street.
Getting from the airport
DUB to city center: 35 minutes by bus (Airlink 747). Trains run every 10 minutes. Service runs 05:30 to 00:30. Skip the taxi unless your connection is under 5 hours.
What to do in Dublin
The stops worth making: Guinness Storehouse, Temple Bar, Trinity College, Cliffs of Moher day trip. Rated above 4.4: Guinness Storehouse (4.4), Trinity College Dublin (4.5), St Patrick's Cathedral (4.5), Croke Park (4.7), Phoenix Park (4.7). You do not need the full tourist circuit. Pick two and commit.
Visa and entry
Dublin is visa-free for US passports. No application, no fee. The border process at DUB is standard. Budget 30 minutes.
How long do you need
The minimum useful layover is 4 hours. That gives you 35 minutes in each direction plus about 80 minutes on the ground. Up to 48 hours is a proper overnight.
DUB airport
DUB has 8 lounges. For short connections under 4 hours, the terminal is the destination: food options, showers, and enough space to reset before the next leg.