The top deck catches wind like a coastal sail as the open-air double-decker bus peels away from the Riverfront Train Station. The Cumberland River runs parallel to the route, daring you to keep up with the city’s momentum—steel bridges, neon bars, and a skyline that alternates between brick facades and modern glass. A local guide narrates with the economy of a storyteller who knows which anecdotes land: where Johnny Cash first played, which storefront used to be a printing press, which courthouse steps have watched generations of demonstrations.