Is the 1-hour time estimate by Google just for the indoor or both indoor and outdoor parts of the gardens?

The estimate sounds good but I would allow more time to experience the gardens both indoor and out.

Indoors only, but you can take more time if you like it.

You could do the indoor part in an hour.

Give yourself about 2 hours in and outdoor. So you enjoy , etc...

I think 1hr is not enough to see the whole garden.

Indoor