As Halloween approaches, the demand for spooky travel experiences increases. Combine shivers and scares with some interesting education when you visit one of these seven famous historic spots that also (sometimes surprisingly) happen to be haunted. © William Wise - Dreamstime.com

If it’s a Revolutionary War-era ghost you want to spot, head to Philadelphia. One of the most famous and well-known ghosts is Betsy Ross’s spirit, which supposedly wanders her historic home in Philadelphia’s Old City. © F11photo | Dreamstime.com

The White House is considered one of the most haunted homes in Washington, D.C. Reported ghosts include those of Abigail Adams, Abraham Lincoln, Thomas Jefferson, Andrew Jackson and John Tyler, among others. © Tupungato - Dreamstime.com

The Biltmore Estate, the largest private residence in the United States, greets thousands of visitors every year. As one of the most haunted places in North Carolina, it boasts several ghosts, including, perhaps most unusual, a headless cat. © William Wise - Dreamstime.com

Another historically notable private residence is the Winchester Mystery House in San Jose, California. Home to the heiress of the Winchester fortune, the house was an interesting architectural project intended to fend off ghosts of gunshot victims. If the supposed ghosts don’t scare you, the house’s unsettling design might. © Dragan Jovanovic - Dreamstime.com

It’s not surprising Gettysburg Battlefield is one of the most haunted spots in the country. The bloody battle claimed approximately 50,000 lives. Some spirits still stick around, wandering the fields and creating unnatural disturbances. © Kurtis Vargo - Dreamstime.com

The RMS Queen Mary was both a luxury ocean liner and a war ship during World War II. She saw her share of misfortune and high style, catering to celebrities and soldiers alike in her lifetime. Unfortunately, she also saw her share of death and a range of ghosts call her home. © Ypkim - Dreamstime.com

Beyond its long and fascinating history, the Empire State Building attracts tons of travelers to simply enjoy Manhattan views from its observation deck. Some, though, spot a grisly ghost on the deck, clothed in 1940s fashion, that throws herself over the barrier much to their shock. It’s guessed the ghost belongs to one of dozens of people who successfully committed suicide from the top of the Empire State Building. © Martial Genest - dreamstime.com