Start your day at Trinity College, which is in the heart of the city and is home to the famous Book of Kells, a Latin manuscript which houses all four Gospels of the New Testament and dates back to the ninth century. When you're finished there, head up the famous Grafton Street towards St. Stephen's Green, a block of landscaped gardens in the heart of the bustling city. It's perfect for a picnic or if you fancy, you can feed the ducks that make the river that runs through it their home. If you're into literature, Oscar Wilde's former house and a statue of the famed playwright stands just at the corner of the nearby Merrion Square.
From here, you're best getting a bus or taxi and dashing over to the other side of the city to visit the famed Guinness Storehouse, where you can see how they make this much-loved drink before enjoying a pint from the Gravity Bar. It gives wonderful 360 degree views over Dublin and is one not to be missed.
After you've enjoyed your pint of Guinness, hitch a lift back towards Dublin Castle and the nearby St. Patrick's Cathedral, which offers some of Dublin's finest architecture. The castle was founded in 1204 and has since been used by the government. Until 1922, it was the seat of the United Kingdom government's administration in Ireland but is now just used as a government complex.
Now the day's getting on, head to the famous Temple Bar to rest your tired feet. A selfie by the The Temple Bar is a must but there are also a plethora of cafes, restaurants, pubs and bars here to enjoy.
Once you're full and watered, head towards the river and cross the iconic Ha'penny Bridge, which was first installed in the 19th century and refurbished in the more recent years.