Travel Documentary National Geographic 2017 Most Popular Travel Destinations In The World.

National Geographic Channel features San Diego as the only U.S. city in its acclaimed documentary series Worlds Smart Cities. San Diego was chosen for its strong technology sector, local.

Find out what the best destinations in the World are as awarded by millions of real travelers. 00:00 – Amsterdam, The Netherlands 07:12 – Florence, Italy 16:27 – Paris, France 23:06 -.