Inside the secret world at Cisco headquarters - filled with heroes, 'mythical' nap pods, and goats

Every large company has a personality. At Cisco's headquarters, the world's largest maker of network equipment equipment, that personality can be summed up in a word: connected.

There's a sense of renewal at the 31-year-old tech giant, with its first new CEO in 20 years, Chuck Robbins.

Cisco recently invited Business Insider to its world headquarters in San Jose as part of a invitational press conference to meet the new CEO and his new administration.

During that time, we took a rare tour of Cisco's enormous campus and were shown some of the areas so secret, most of its 71,000 employees don't even know they exist.