For almost half a century, a colorful map highlighting secret soi haunts has been a backpacking staple of every dedicated visitor to Bangkok. But the family business behind those maps has finally succumbed to the rise of Google Maps.

The company that produces Nancy Chandler’s Map of Bangkok, the exploration bible of every paper-based tourist and expat since the 70s, is shutting its presses after 45 years in business due to declining sales. The last maps will be printed in May.

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