The underwater monument near Yonaguni Island has puzzled divers and researchers since its discovery in 1986. Submerged ...

Calling all history buffs! Step back in time at one of these significant sites in each state, from Revolutionary War ...

Madison, Wisconsin 2. Marquette, Michigan 3. Scottsdale, Arizona 4. Moab and Escalante, Utah 5. Omaha, Nebraska—and more.