Did I mention we're going to....

Here's some clues:

a dog with with a key
a watery drop
no room for the tea
a snow covered top

a falling rock slide
repetitive dolls
a frog on a ride
a house with no walls

a ghost-filled house
travel through space
home for a mouse
earth's happiest place

If you already know, see if you can guess what each clue refers to!
(The last two are the answer to my riddle.)