Dortmund is a city in Germany’s North Rhine-Westphalia region. It’s known for its Westfalen Stadium, home to the Borussia soccer team. Nearby Westfalen Park is marked by the Florian Tower, with its observation platform. The Dortmund U-Tower is topped by a huge letter U and houses Museum Ostwall’s contemporary art exhibits. Rombergpark botanical garden has local trees and greenhouses with cacti and tropical plants.