According to PWC, this year's number one "City of Opportunity" is New York. Toronto, San Francisco, Stockholm, and Sydney comprised the rest of the top 5.
From The Infratructurist:
"As the report points out, the key to being near the top of the list is a great transit system:
It is no accident that one of the most culturally evocative icons of each of the top four cities in this category (in ascending order) is its respective transport system: San Francisco's cable cars, New York's subway, Chicago's "L" and Paris' Métro-a particularly apt example of municipal infrastructure becoming a part of, and reinforcing, a city's cultural identity."
See the full report from PWC.