If I was to pick 1 zone from each continent:
Westfall - Golden countryside sunset on the shore
Auberdine Darkshore - Nostalgia, first town I went to after starting in vanilla that really showed how big the world was
Nagrand - wide open grassy plains with cool floating rocks, mysticism
Grizzly hills - I don’t need to explain why this is the #1 choice
Vashj’ir - little tropical retreat, bonus points for an underwater portion
Jade forest - A lush green zen garden
Frost fire Ridge - I live in a cold state and use firewood for heat. This one makes me feel at home, akin to Grizzly hills
Highmountain - Similar to ones above. Nice atmosphere, cozy places to sit by a fire and listen to the icy wind. Excellent views
Tiragarde Sound - The atmosphere is similar to highmountain but as a coastal version. Not to mention to great views.
Azure Span - More Grizzly hills vibes. Bonus points for tuskarr and some hot soup
Isle of Dorn - I’d like to see some Ironforge style home.set in the green hills of Dorn
Special mentions:
Gilneas - awesome vibes for a darker city themed home
Stormheim - A close second to Highmountain, gold fields and deep fjords, beautiful locations.
Winterspring - Chilling ice and nice hotspring to relax in