Watercolor painting, scanned and completed Digitally.
Map, compass, breaching whale and sailing ship all watercolor, city images done digitally, labels digitally by hand, title watercolor retouched digitally.
The challenge was making everything work together in the end since watercolor and digital tend at least for me not to match exactly.
For the digital stuff I used a Wacom Intous 5 and/or Cintiq companion depending on where I was at the time.
Commission for fellow member at the Cartographer's Guild. Redthorn setting is Forgotten Realms by TSR / Wizards of the Coast.