Allerton Garden also known as L wa i-kai, is a botanical garden located on the south shore of Kauai, Hawaii. The garden covers and 80 acre area and is situated beside the L wa i Bay, in a valley transected by the L wa i Stream. It is one of the five gardens of the non-profit National Tropical Botanical Garden. Queen Emma of Hawaii resided above this valley for a short interval, and a modest house that was perhaps her residence has subsequently been moved to the valley floor and renovated