These Austrian ice caves are some of the largest known to man. Only a small portion of the labyrinth is open to tourists, but it's enough to feed one's palate for Mother Nature.
These Austrian ice caves are some of the largest known to man. Only a small portion of the labyrinth is open to tourists, but it's enough to feed one's palate for Mother Nature.
The Kowloon Walled City once packed 33,000 within 6.5 acres. Residents built labyrinthine corridors above the street level, where shady businesses could run unmolested by authorities.