Zak, Nick and Aaron travel to Goodsprings Nevada to see a 100-yr-old saloon.

Zak, Nick and Aaron head to a Texas inn built on a 150-yr-old battleground.

Zak and Aaron witness a spirit operate on Nick in a hospital in Sonora, CA.

Zak, Nick and Aaron investigate dark and ominous prison cells in Missouri.

Zak, Nick and Aaron engage in a suspenseful 3-part lockdown in Santa Ana.

Zak, Nick and Aaron help homeowners scared out of their Victorian mansion.

In celebration of their 100th episode of Ghost Adventures, paranormal investigators Zak Bagans, Nick Groff and Aaron Goodwin look back on some of the most unforgettable moments from the show's previous 99 episodes. The guys take fans on a rollercoaster ride of the highs and lows of their journey over the years. Throughout the special, they will also reveal the top moments in select categories as voted by fans on TravelChannel.com.

Zak, Nick & Aaron's 100th episode takes them to the original Exorcist House.

Zak, Nick and Aaron get their chance to investigate the Alcatraz prison.

The GA crew investigate the odd paranormal events at a modern-day brothel.

Zak, Nick and Aaron investigate a rundown old mansion in the Midwest.

The ancient Celts believed that Halloween was the time when the veil between the world of the living and world of the dead was at its thinnest. And for Zak, Nick and Aaron, it means it’s a time for spirits to run free. Ghost Adventures spends this Halloween in Transylvania, a region in central Romania, on a quest to contact Dracula and the spirits associated with him. This 2-hour special features the guys’ once-in-a-lifetime journey into the heart of Romania and the birthplace of Vlad Dracula

Zak, Nick & Aaron return to KY to examine former Civil War field hospitals. The guys experiment using reenactment actors to emulate the original battle, and they hear a spirit utter the name of a fallen Civil War soldier.