Yesterday, Senator Ted Kennedy's widow Victoria showed Her Majesty around the Kennedy Center for the Performing Arts. Margrethe also visited the Smithsonian, where she got to see First Lady Michelle Obama's famous inauguration gown.
Meanwhile, back across the pond, Queen Elizabeth II was speaking at the opening of the National Assembly in Wales. When you're the queen of so many lands, you're often asked to perform this kind of duty. Elizabeth has so many realms, you could probably make a full-time job just out of opening parliaments, assemblies, etc.