Hewison recalls that one of the mistakes early in his career occurred when he failed to use stops and was trying to pick a counter-trend, or a top, rather than his current practice of trend-following.

FORBES: Adam Hewison Aims For 'The Fat Part In The Middle' Of Market Moves

"All they do is put an ID card down and pick up a phone, " says Bill Knight, who stands behind a counter giving out the phones.

CNN: Volunteer greeters offer hugs, applause for troops

Pick up a booklet for 2, 500 South Korean won from the information counter at the entrance for profiles of all the sights, as well as a map.

BBC: Make art not war in South Korea