Data sources

Duanvietnam credits each open dataset as its licence requires.

Administrative units

Vietnam’s 34 provinces and 3,321 wards, communes and special zones (in force since 1 July 2025): Vietnamese Provinces Database by Thang Le Quoc (MIT licence). Boundaries derive from the Vietnam Administrative Units Reference Map by the Vietnam Natural Resources, Environment and Cartography Publishing House (sapnhap.bando.com.vn).

Places

Some unverified listings come from Overture Maps Foundation (overturemaps.org), Places theme, CDLA Permissive 2.0; Foursquare records within it are under Apache 2.0 — Copyright 2024 Foursquare Labs, Inc. All other listings are added by owners and users.

Maps

Base map © OpenStreetMap contributors (ODbL). Directions open in Google Maps.

What we do not do

We do not copy listings or reviews from Google Maps, Booking.com, Agoda or any other site.