Moulvibazar, Bangladesh

The district of Moulvibazar is home to over 2.1 million people, but the reality on the ground is far from idyllic. Flooding from the region's rivers is a persistent headache, with the district's low-lying areas regularly inundated by the annual monsoon rains. And while the district boasts impressive tea production, accounting for 91 of Bangladesh's 153 tea gardens, the bureaucracy required to navigate this industry can be a minefield.

Those with a passion for natural beauty may find solace in Moulvibazar's lush landscapes, including the Lawachara National Park and its diverse wildlife. However, the district's remoteness and infrastructure challenges make it a better fit for the adventurous expat than the typical risk-averse retiree.