This former Soviet military base has over 10 original aircraft and an enormous amount of memorabilia on display.

What was once supposed to be the symbol of a shining Afghan future is now a bombed-out ruin.

Inscriptions found in the Majella mountains reveal stories of resistance and rebellion after the unification of Italy.

Access to this hidden site of a 14th-century mass suicide is prohibited, unless it is to pray for the dead.

Site of the first official transatlantic wireless communications.

An auroral research program that superheats the ionosphere.

Permanent exhibit reminds visitors of the Exxon Valdez.

This sprawling stronghold has been at the center of some of South India's bloodiest wars.

Inside a beautiful Indian temple is a seemingly magical floating pillar that doesn't touch the ground.

This mysterious medieval grotto holds a grid of sacred wells of unknown purpose.