- Croghan Hill, Rhode, County Offaly: Considered a portal to the otherworld that opens every Halloween, drawing from hero-tales from the era of Fionn and the Fianna.
- Listoghil at Carrowmore, county Sligo: A Samhain sunrise mound, noted for being the only site in Ireland with a roof box similar to Newgrange.
- Loughcrew, Cairn L at Slieve na Calliagh, county Meath: This site is aligned with the Samhain sunrise, showcasing ancient burial practices.
- Mound of the Hostages (Dumha na nGiall) at Tara, county Meath: Also aligned with the sunrise at Samhain, this site has historical significance as a burial mound.
- Slaughtaverty Grave of Droch-fhola: Located in county Derry between Garvagh and Dungiven, this grave of the blood-drinking vampire Abhartach inspired Bram Stoker.
- Tlachtga near Athboy, county Meath: A historic site where the Druidic Halloween fire was lit and then carried to the four corners of Ireland, symbolizing the spread of light during Samhain.
