From the full intro video, I don't actually see a part of a scenario of South Korea.There's speculation that 33-35 of this post (http://forum.realityfanforum.com/index.php/topic,32861.msg1189192.html#msg1189192) and the cap mentioned in this post (http://forum.realityfanforum.com/index.php/topic,32826.msg1189857.html#msg1189857) might be Korean. The last few seconds of "Meet the Teams" and the regular Intro are the same.
1/2: Trấn Quốc Pagoda, Hanoi (Claude)
3/4: Azam Marine, Dar es Salaam/Zanzibar/Pemba, Tanzania (Peach)
5/6: Castello di Vezio, Varenna (Slowhatch)
7/8: São Paulo Cathedral, São Paulo (Claude)
9/10: Panathenaic Stadium, Athens (Claude)
11/12: Galleria Vittorio Emanuele II, Milan (Slowhatch)
13/14: Arachova (Slowhatch)
15/16: Palazzo Contarini del Bovolo, Venice (Slowhatch)
17/18: Tam Cốc-Bích Động, Ninh Bình (BritishTARFan)
19: Coati, Gamboa (Boingo)
20: Our Lady of the Assumption, São Paulo (Boingo)
21: Likely Tanzania
22: Likely Tanzania
23: Huldra, Norway (Boingo)
24: Troll mask, Norway (Boingo)
25: Castello di Vezio, Perledo (Slowhatch)
26: Piazza San Marco, Venice (BritishTARFan)
27: Ponte del Cavalletto (http://photos.wikimapia.org/p/00/04/55/26/11_big.jpg), Venice
28: Somewhere in Vietnam
29: Possibly Santa Efigenia (Boingo)
30: Panama Canal, Panama City (BritishTARFan)
31: San Moisè, Venice (Slowhatch)
32: Masks, Tanzania
33/34/35: Possibly Seoul