Arrive into Dublin Airport or Heuston Station, transfer to your central hotel (Grafton/Temple Bar area recommended) and drop bags; this gives you a base to walk the city easily.
Classic Dublin café on Grafton Street serving full Irish breakfasts and great coffee; a lively start near shopping and Trinity College. (Opens around 8:00am).
Historic university and the Book of Kells exhibition; admire the Long Room with centuries of books. Check opening times — normally 9:30am–5:00pm, last entry earlier in afternoon.
Short walk from Trinity: explore Dublin Castle grounds and the free Chester Beatty Library for rare manuscripts and art; the castle complex gives context to Ireland's history.
Modern Irish dishes with river views in a historic converted mill — a good introduction to contemporary Dublin cuisine (kitchen open into the evening).
Interactive museum explaining the brewing process with a rooftop Gravity Bar view of Dublin; open generally 9:30am–5:00pm, buy timed-entry tickets in advance to avoid queues.
Relax or cycle in one of Europe's largest city parks; Dublin Zoo (in Phoenix Park) is open typically 9:30am–5:30pm and is a good optional visit if you have energy.
One of the world's top museums with global antiquities; many galleries are free and the museum typically opens around 10:00am–5:30pm (check special exhibits).
Walk along the South Bank to take in views of the Thames and Big Ben; the London Eye (open roughly 11:00am–6:00pm) is an optional ticketed panoramic ride.
Visit the Tower, see the Crown Jewels and learn about centuries of history; typically open 9:00am–5:30pm but confirm seasonal times and book tickets ahead to avoid queues.
Historic food market offering artisan stalls and diverse street food — great for tasting local and international snacks (open mid-morning into late afternoon).
See Houses of Parliament, Westminster Abbey (exterior/optional interior tours) and stroll to Buckingham Palace to view the ceremonial center of London.
Visit the artists' square Place du Tertre and Sacré-Cœur basilica for panoramic city views; the area is largely pedestrian-friendly and ideal for photos.
Exceptional Impressionist and post-Impressionist collections in a converted railway station — on Tuesdays the Musée d'Orsay is open (closed Mondays), so it's ideal on this day.
Visit the world-famous Louvre to see masterpieces like the Mona Lisa and Venus de Milo; the Louvre is usually open on Wednesdays (closed Tuesdays), so plan for this day and pre-book timed entry.
Take a scenic stroll along the Seine or an early evening Bateaux-Mouches cruise to see monuments lit from the water (boat schedules vary; many run until evening).
Visit the Eiffel Tower in the evening for sunset views and city lights; summit access typically available into the evening but check closing times and book ahead.
Tour the Palace, Hall of Mirrors and gardens; the Palace is usually open from ~9:00am and can get busy, so arrive early and pre-book tickets for the palace and/or gardens.