Why is `boost::any` better than `void*`?

Question

What inherent advantages do boost::any and boost::any_cast offer over using void* and dynamic_cast?

Answer 1

boost::any calls destructors:

{
    boost::any x = std::string("Hello, world");
    x = std::wstring(L"Goodbye"); // string::~string called here
} // wstring::~wstring called here