A millennial who's traveled to hundreds of cities said her favorite is a lesser-known spot with lovely architecture, tasty food, and lively festivals.

One of Germany’s most famous cities hosts historic ... Castle and then enjoy the view of this beautiful German city. Heidelberg has a charming old town with one of the longest shopping streets ...

Read on to explore them all on these five routes across Germany ... brick roads of Heidelberg, while over in Wiesbaden, savor a glass of wine atop the Neroberg, the city’s 800-foot-tall ...

Heidelberg’s run, the only one taking place in Germany, is one of 30 scheduled international runs this year. Eight other cities outside Canada also held runs on Sunday, including London ...