Halloween // Londonderry, Northern Ireland OR Salem?

Hi!

My sister and I have traveled the last 4 Halloweens to Salem MA to celebrate the holiday. We Love the history, festivities, snacks, atmosphere - all of it.

That being said we're looking to up the ante this year. We're looking for the world's best Halloween celebration. Someone said that might be in Londonderry, Northern Ireland...I'm looking for intel!

If you have any amazing seasonal travel experiences please let me know.