"Disappearances and other strange phenomena in the Bermuda Triangle have long inspired speculation and theories. Theorists chalk it up to everything from bad weather to time warps. Explore the mysterious history of the Bermuda Triangle"--

"Buried deep beneath the outskirts of the city, the London catacombs are known for being as beautiful as they are eerie. Discover the London catacombs, including who was laid to rest there, why they closed, and more"--

"Area 51 is a secretive location that has led to many conspiracy theories. Examination of those theories, the location's history, and more will keep readers engaged as they discover the mysteries of Area 51"--