Simon doesn't have that experience -- even among the powerful, few fae can resist using the natural elements of their world. Probably a mix of many fae being old enough to remember when cities were stone and wood and small enough that they could be fed by the surrounding fields, and the fact the major symbol of human progress -- iron working -- was toxic to most fae. (Not to mention for Simon personally, the decades he was working most in modern San Fransisco were the ones he was under that woman's control, so he could never trust the relief on returning to the Summerlands was his own, and not something she implanted in his mind.)

"You have my sympathy. It is a very beautiful garden, after all." And, yes, it might be Terra showing off, but that doesn't mean they can't benefit from it. As near as Simon can tell, the emotional reactions were achieved by mundane means. "I admit, I've had to adapt to rather different sorts of gardens recently, so seeing a familiar one stirs some nostalgia."

The Undersea has gardens of their own, and they are also beautiful, but they don't hit that level of nostalgia the way gardens on the land (the Earth or the Summerlands) do.