Kalyan, India

Kalyan is no paradise. With over 700,000 residents, this Mumbai satellite city is ruled by a municipal bureaucracy that oversees the entire metro area. The tax burden is heavy, accounting for 39.1% of the city's ₹1,247 crore (US$150 million) in revenue. And the climate is hardly idyllic, with sweltering summers and chilly winters that see temperatures swing between 14-34°C. Those drawn to Kalyan for its cheaper cost of living or access to Mumbai will have to contend with persistent headaches. Only the most resilient and resourceful expats will find this city a suitable fit.