I'm not sure how travelers judge world capitals. London would win grandest, I expect; Paris, most romantic. But there's a very pretty tree just in front of my building which might win most charmimg, prettiest, ethereal, something like that, for my city.
The tree is a flowering cherry, one of hundreds exploding all over the city in flowers of every dazzling shade of pink. They came from Japan oringinally but they now say Washington as authentically as any of those duller symbols like the Capitol.
The flowers teach of the sweetness of life. Come share it if you can. It won't last long. The blooms vanish in a trice, petals carried on a breeze. Pay a visit if you can. Your lasting souvenir will be memories of genuine magic. How many cities can offer that?