Topline Austrian billionaire Heidi Horten died Sunday at the age of 81, the Heidi Horton Collection said in a statement, days after she opened a private museum in Vienna featuring her nearly billion-d...
Topline Austrian billionaire Heidi Horten died Sunday at the age of 81, the Heidi Horton Collection said in a statement, days after she opened a private museum in Vienna featuring her nearly billion-d...