Found a tweet Mentioning them going to Burgos.
Liezl Yraz @liezlyraz 2h
@SoYoungPatrick sa may bridge eh.
next nila sa burgos. Pinapalabas na ba yung amazing race? No idea eh. Hehe
(Google Translate: They next Burgos. Showing my amazing race ever? No idea eh. Hehe)
Also found this old article,http://archives.pia.gov.ph/?m=7&r=R01&id=48647&y=2011&mo=10
LAOAG CITY, Oct. 20 (PIA) -- Get ready for season 5 of the reality game show The Amazing Race Asia as it goes to Ilocos Norte.
The municipalities of Burgos
, Bangui and Pagudpud in Ilocos Norte will be the show’s trail for season 5 which will be aired in next year’s episode.
The US-based reality show chose the seven great wonders Ilocos Norte for the utilization of the shows' venue.
These spots include the Kaangrian falls, Avis falls, The Cape Bojedour which is thehighest light house in Asia, the famous Kapurpurawan rock formation all from Burgos, the Patapat bridge, the beaches of Pagudpud, and the first windmills in Asia located in Bangui.