ABC Once Upon A Time

In Fall, the Storybrooke beach scene where Elsa is reunited with her sister Anna was filmed on the Third Beach in Stanley Park in Vancouver, Canada, where production for Once Upon a Time is based.

In The Snow Queen, the language in the spell book that Emma and Elsa are reading is not actually Elvish. It contains an excerpt from The Book of Lost Tales by J. R. R. Tolkien, written in Anglo-Saxon Futhorc Runes. The excerpt is from the chapter about "The Tale of Tinúviel". The text transliterates as:
Then was there much eagerness alight and
Eriol told them of his first
wanderings about the western havens, of
the comrades he made and the
ports he knew, of how he was one time
wrecked upon far western islands and
there upon a lonely eyot found an [sic]
ancient mariner who dwelt for ever solitary
in a cabin on the shore that he had fashioned [sic] of the timbers of his boat.
More wise was he, said Eriol, in all matters
of the sea than any other I have
met, and much of wizardry was there in
his lore. Strange things he told me, of
regions far beyond the western sea, of
the magic isles, and that most lonely
one that lies beyond. Once long ago he
said he had sighted it glimmering
afar off, and after had he sought it
many a day in vain.

Much of the text is repeated on both pages.

Belle's translation (seen upside-down) reads:
[illegible]
of [illegible word] being
With both hands hold the candle
And then use your magic to light it
And then, when you blow on it
Vines of fire will issue forth
From the candle
And form a serpentine bond
Tendrils that will bind
The [obscured] of your intent

In White Out, the show producers had planned on filming the ice cave scenes in a meat locker, in order to capture the characters' breath on screen. The idea was scrapped when they realized that viewers wouldn't see Elsa's breath since she is not affected by the cold. Instead, the scene was shot inside a studio, where the temperature was 110 degrees Fahrenheit (40 degrees Celsius). While Jennifer Morrison pretended to be freezing and shivering, she was actually sweating through her T-shirt.

In There’s No Place Like Home, in order to keep the ending scene with Elsa a secret, Adam Horowitz and Edward Kitsis scripted an alternate ending, so that very few people knew about Elsa's appearance in the season finale. Only the show creators and a small crew that filmed the end scene, knew about the secret ending. The scripted ending featured the Sorcerer's hat coming out of the urn instead of Elsa.