Hidden Hanoi: Map creators share city's secret spots

Hung Nguyen: Pick up one of Nancy Chandler's vibrant Thailand maps and you'll be astounded by the depth of detail, eye-catching designs, quirky annotations and original recommendations.
That's exactly how expats Isabelle Der Hagopian and Julie Torreton felt when they encountered the popular Bangkok map for the first time.
Inspired by the colorful graphics and local know-how, the pair set out to design a similar guide for Hanoi.
"When we started, we would drive around on a motorbike and one o