How old must you be to purchase a ticket for entry? Anyone under the age of 15 would need to be accompanied by an Adult aged 18+. Guest's aged 15 and over can visit unattended. Related articles Is there any restrictions for children visiting The Backpool Tower Dungeon? How old must you be to enter The Blackpool Tower Dungeon? Is The Blackpool Tower Dungeon scary? Do you offer a family rate for The Blackpool Tower Dungeon? I'm a Merlin Passholder, do I need to pre-book entry?