By 1898, when the Spanish were pushed out of Cuba by the Americans, both the Spaniards and Dominicans had decided firmly that the remains in their own possession were the authentic item, and that the other must be holding onto the son. Therefore, in Seville an elaborate cathedral tomb was prepared for the explorer's return to his homeland, while in his adopted home another "official" tomb was planned.
It took the Dominicans somewhat longer to get their design act together. It was not until 1931 that a design competition was held, won by a Scottish architect who proposed the 688 foot long cruciform memorial complex that now stands. The building was barely ready by the 1992 500th anniversary of Columbus' arrival, when the remains were finally interred. In 2003, the controversy was tackled by DNA science, and the remains in Seville tested against known remains of Columbus' brother Diego and son Fernando. Although promising, the results are not conclusive, and thus far, the remains interred at the lighthouse in Santo Domingo Este have not been tested, so for now, the mystery endures.