yes gardens are good focus for meditation
Zen gardens reflect the form and emptiness of the world. Their form is often lush plants interspersed with spaces (often of stones) without plants representing emptiness. They are designed to promote peace and tranquility and to foster spiritual awakening. .
Zen came to the West from Japan. There are many Zen temples in Japan.
The term "Zen Gardens" is a Western concoction. The Japanese never refer to them as such but call them 枯山水 karesansui, "dry landscape" gardens (lit. dry, mountain & water). These gardens actually existed in Japan before the arrival of Zen Buddhism (the oldest remaining gardens date from the Heian period, 784-1185 AD).
Zen Buddhists meditate in Temples.
when you complete adventure mode
To unlock Zen gardens you must complete level 5-4 in adventure mode. Then you just have to click on watering can icon in main menu.
I don't know, but there are a lot of Zen temples in Kyoto, Japan. I doubt they'd express it using the word "holy" but so many temples has to make it pretty special. As well as Kyoto, Kamakura near Tokyo has many very important Zen temples. This reflects that the Kamakura era was the start of the "Shogun era"...and Zen Buddhism was very popular among Samurai.
Zen Buddhism
Zen gardens are an aid to meditation. they accomplish this by providing enough stimulation for the senses to keep them focused without wandering, while avoiding the clutter of fine detail that is distracting. Meditation is a valued tool for achieving insight in Zen Buddhism.
You could get any null in any place by going to that particular place and 'attune' the null/use it to go to null chamber. When you use the null to zen gardens, it will lead you there.
Its when all the gardens start to bloom with gorgeous flowers. Some gardens include Zen gardens. Japan has many beautiful flowers.
because they do and becvause they like to medeitate to fell better and they meditate at zen gardens