The comic' Batman, though, doesn't just keep his equipment — from his Batmobile to his Batcomputer — in the Batcave. It's also stocked with trophies from his more memorable adventures.

This time around, Batman has returned as part of the Zero Point crisis, the storyline of which is explored in a new comic book mini-series from DC Comics. Batman is transported onto the Island.

Bat Conservation International runs 3-hour tours to the private property where the cave is located from May through September. Reservations are required.

It turns out that the Bat Cave… had another Bat Cave underneath it. A Zur-Cave if you will, for Zur-En-Arr to retreat to, to build the likes of Fail-Safe, and more. Much more.