More like Into the Waves

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Peter PanUniverse
universe112 books1902
Fantasy.
“Second star to the right, and straight on till morning — and there it is, the island that every child dreams once and then, growing up, contrives to forget.”
from the catalogue
Start with Peter Pan →
includes Peter Pan, Disney Fairies, Fairy Haven, Neverland, Disney's Peter Pan & Wendy, Neverland (Heather Killough-Walden), The Untold Stories of Neverland, Hook's Revenge
The Faraway TreeSeries
series16 books1939
Whimsical in tone.
Start with The Enchanted Wood →
FairylandSeries
series7 books2009
Whimsical in tone, about coming of age and quests.
“The novels follow a 12-year-old girl named September as she is spirited away from her average life to Fairyland.”
from the catalogue
Start with The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making →
The Wind in the Willows UniverseSeries
series17 books1908
Set in british isles.
Start with The Wind in the Willows →
Rachel Roberts' AvalonSeries
series12 books2001
About quests, set in secondary world.
Start with Circles in the Stream →
The Wishing-Chair UniverseSeries
series14 books1937
Start with Adventures of the Wishing-Chair →