Frankfurt is one of three German cities to rank among the top 10 in the world.

The city is the fifth largest in Germany and is considered the largest financial center in continental Europe. It’s home to such major institutions as the European Central Bank and the Frankfurt Stock Exchange. … More

Frankfurt is also a major transport hub for central Europe, given its modern infrastructure, including an integrated high-speed-rail network and a busy international airport. About 114 million passenger journeys are made annually on the city’s subway system, while 50 million passengers each year pass through the airport, the ninth highest in volume globally.

Frankfurt is the 11th safest city in the world based on crime levels and law enforcement effectiveness. The city made headlines in September after its government banned local chapters of the Hells Angels and confiscated their assets, citing a history of drugs, weapons offenses and violence.