Happy Halloween, friends! If you’re still trying to solidify plans for this most mischievous of nights, here’s something you might be interested in. As you can see in the map above, Harvard’s campus is very much a paranormal place. So if you dare, head over to Cambridge for a night full of frights.

The map was compiled by the auspicious Harvard Gazette based on the second book of Sam Baltrusis, “Ghosts of Cambridge: Haunts of Harvard Square and Beyond as well as personal testimony from residents, students and local employees.

It comes as no surprise that Harvard is a hotspot for ghosts, apparitions and other ghoulish activity. The nation’s oldest higher-education institution traces its roots back to the 1600s when it was founded hot on the heels of the City of Boston. Longevity and age are crucial for hauntings for the simple and logistical reason that older buildings have an increased likelihood of playing witness to the traumatic events thought to be the catalyst for ghosts.

But that’s hardly the only criteria for being haunted.

“Some Houses at Harvard may be older, but two ghost stories emanate from Lowell House, the sprawling river complex named after Harvard President Abbott Lawrence Lowell, brother of the Pulitzer Prize-winning imagist poet Amy Lowell,” wrote the Gazette.

“Over at Massachusetts Hall, the oldest surviving building on Harvard’s campus, a tale still circulates about the ghost of Holbrook Smith, supposedly a member of the Class of 1914, though no record can be found of him,” added the university’s news service. “Known to appear wholly human — except for that walking-through-walls thing — Smith enjoyed amiably chatting up Mass Hall’s student residents until he was told to leave by the onetime Dean of Freshman William C. ‘Burriss’ Young ’55, who lived in the hall for nearly four decades.”

So I put it to you, Greater Boston. Do you have the nerve to explore the Harvard campus on Halloween?

Boo!