For those who like to be out for a stroll/hike and quantity hunt.
Remember to take down those hints for the bonus cache at specific waypoints.
Be care on the handling of the cache as there is H2O risk.
WP Hint : look to the east and there is a building with a signboard on top (word commences with "C"); count the number of letters in this word and it is the "C" number for the bonus cache.
Enjoy & have fun !