1. Walk in Dublin

During one day, you can walk in the city center to discover some places like:

• Saint Stephen green park and shopping center
• Some famous streets and bridges
• Trinity collegeand its library (one of the oldest and most prestigious university)
• Dublin Castle
• Christ Church Cathedral
• The Parliement
• Temple Bar (stop you to drink a beer or a coffee)
• The Spire (stop you to Penneys, a very famous cheap clothes' shop)

2. Phoenix park

Phoenix park and its 707 hectares, is one of the largest enclosed recreational spaces within any European capital city. It's larger than all of London's city parks pu together and more than twince the area of New York's Central Park. It has been managed as a National Historic Park since 1986. Its names comes from 'Fionn Uisce' in Gaelic, which means 'clear water'.

Phoenix Park is covered by trees, which are mainly broadleaf parkland species such as oak, ash, lime, beech, sycamore and horsechestnut. The Phoenix Park is a sanctuary for many mammals and birds and a wide range of wildlife habitats are to be found in the park.  One such  area is the Furry Glen, which is managed as a conservation area. 

• Aras an Uachtarain which is the residence of the President of Ireland from 1750.
• The United States Ambassador's residence built in 1774.
• Welligton Testimonial which is an obelisk which mesure about 60 meters tall. It was built in the nineteenth century to celebrate Arthur Wellesky's victories.
  
• The Papal Cross which was erected in 1979 for papal visit of Pope John Paul II.  
• The Phoenix Monument
• Dublin zoo
• The Victorian people's flower gardens provide an opportunity to display Victorian horticulture at its best. 

3. Kilmainham goal

Kilmainham Gaol is one of the largest unoccupied gaols in Europe, covering some of the most heroic and tragic events in Ireland's emergence as a modern nation from 1780s to the 1920s. Dublin's Kilmainham Gaol held some of the most famous political and military leaders in Irish history such as Robert Emmet, Charles Stewart Parnell, the 1916 Rising leaders and Eamon de V.

Attractions include a major exhibition detailing the political and penal history of the prison and its restoration. There is also a museum.

4. Wiclow moutains

 You should go to Glendalough. It's the 10th century monastic and there is also a cemetary. Spend several hours at this area of overwhelming beauty. Relax you and take a lesirurely walk up to the waterfull, the upper and lower lakes. And then finish the day at Avoca mill which which is the oldest wool's manufactures in Ireland. 

Make sure you have your camera ready!   

5. Dun Laoghaire Harbour

Dun Laoghaire is a harbour and a suburban seaside town on the Dublin coast. It is very nice. If you can there, you will discover boats and a good way for a walking. Stay there for the sunset, it is wonderful!

6. Dublin coast: Dalkey to Greystones

Probably the best place that I've seen in Dublin. Take the DART to Killiney where you arrive on the beach. Walk on the beach and go to the left when you look the sea. And walk in Killiney town where you will discover so many big and wonderful houses with big gardens, view on the bay, fountains, swimming pools, volleyball fields, expensive cars... And then, you will arrive to Dalkey, its hill and its harbour. Take some pictures and then go to train station. Take the train to Bray. You could walk on the beach again. And follow the way to the cross and then to Greystones where you will walk around cliffs. Very nice! I liked it very much. Finally, you will arrive to Greystones, its harbours and sheeps.

Take care to have good shoes because you will walk a lot (about 6hours)