Sign up Join the world's largest treasure hunt. Video: what is geocaching (75 seconds) There are 5,787 geocaches around Tokyo. To get started, create a free geocaching account and download the official Geocaching® app or use a GPS device. 3 steps to begin your adventure 1. Create an account Create an account online or through the Geocaching® app to view a map of geocaches near you. 2. Find a geoca