Honduras or more correctly the islands of Roatan and nearby Helene, part of the Bay Islands were claimed in 1936 by F.A. Mitchell-Hedges to have been the site of Atlantis.
Specifically, he announced that on the island of Helene that “we unearthed an ancient city of considerable size.”
Mitchell-Hedges and his daughter are best known for the claimed discovery there of the most perfect crystal skull ever found.
(a) http://trove.nla.gov.au/ndp/del/article/55569660?searchTerm=Atlantis discovered&searchLimits=