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Voted #1 Day Spa in Jacksonville, but don't take our word for it, take theirs. Testimonials Seventh Wonder is a slice of heaven here in Jacksonville Seventh Wonder is a slice of heaven here in Jacksonville, FL. The experience was absolutely magnificent. The environment is warm, welcoming and serene. I felt both the comfort of being at home while also feeling the tranquility and luxury of being at the spa. All the products are plant based which just makes everything 100 times better.