Haunted hotel guide · Newport, Rhode Island

The Haunted Castle Hill Inn, Newport: The Agassiz Ghosts and the Turret Room

On its own 40-acre peninsula where Narragansett Bay meets the Atlantic, Alexander Agassiz’s summer house is now one of New England’s finest inns, and staff say a woman of the family still walks its halls at night.

By The Haunted Rooms Team · Updated November 2026 · How we rate hotels

2.2/5Haunted Rooms Score
1875Agassiz builds his summer house
Turret SuiteRoom to ask for

Check availabilityMeet the ghosts

Castle Hill Inn stands at 590 Ocean Drive on a 40-acre headland at the mouth of Narragansett Bay, with the Castle Hill Lighthouse on the rocks below. It began as the summer home of Harvard marine biologist Alexander Agassiz, became a hotel after World War II and is now an employee-owned Relais and Chateaux inn, the first in Rhode Island to join the group.

Its ghosts are quiet ones. Staff and guests have reported a woman walking the halls of the mansion at night, believed to be one of the Agassiz family, and some say Alexander himself is behind the fine china thrown in the pantry. For the rest of the state, see our guide to haunted hotels in Rhode Island.

Castle Hill Inn at a glance

Haunted reputation2
History4
Ghost hunter access1
$$$ · Over $300Pet friendly
  • Address 590 Ocean Drive, Newport, RI 02840
  • Opened Agassiz mansion commissioned in 1874 (the inn gives 1875 and also 1885); a summer hotel after World War II; now open year round
  • Most haunted spots The halls of the Agassiz Mansion and the pantry
  • Best-known ghosts A woman of the Agassiz family; Alexander Agassiz, blamed for thrown china
  • Booking the haunted room There is no named haunted room. Book an On the Hill room in the Agassiz Mansion, or the Turret Suite at its top.
  • Good to know Mansion rooms are for guests 12 and over; dogs are allowed only in select Harbor House and Beach Cottage rooms; full prepayment at booking.

Check availability

The ghosts of Castle Hill Inn

The woman in the halls

The most reported ghost at Castle Hill is a woman seen walking the halls of the mansion at night. HauntedPlaces says she has been seen by several staff members, and OnlyInYourState reports that staff and guests alike have seen her. She is said to be a relative of the original builder, from the Agassiz family who summered here for more than half a century.

Nobody has named her. It is tempting to think of Mrs. Maximilian Agassiz, Alexander’s daughter-in-law, who the inn says was so frightened by the 1938 hurricane that she refused to return, but no published story makes that link, and we offer it only as a curious irony.

China in the pantry

The second story is livelier. Staff have said that fine china is thrown in the pantry with nobody nearby. Some blame the woman in the halls; others say it is Alexander Agassiz himself, unhappy about what has become of his house.

The older version, on HauntedPlaces, gives the thrown china to the female ghost. OnlyInYourState’s newer telling says Alexander Agassiz himself is said to haunt the inn and to like throwing fine china around. Either way, nobody describes it as menacing, and the inn’s own history pages do not mention ghosts at all.

The Turret Room

There is no ghost story attached to the turret, but it is the room with the strongest sense of the past. Thornton Wilder wrote about the turret room of the Agassiz house, and it is still bookable today as the Turret Suite, at the highest point of the mansion with views over the bay, the ocean and the lighthouse.

The most haunted rooms and places to look

  • Turret Suite: At the top of the Agassiz Mansion, the room Thornton Wilder wrote about, with views of the bay, the Atlantic and the lighthouse.
  • On the Hill rooms: Guest rooms inside the Agassiz Mansion, where the woman is seen, with antique furnishings and soaking tubs. Not for children under 12.
  • Harbor Houses: Waterside rooms on the bay that were a favorite hideaway of Grace Kelly; some are dog friendly.
  • Beach Cottages and Beach Houses: Rooms on the ocean side, outside the mansion and the stories, but with the inn’s best beach access.

History of Castle Hill Inn

Castle Hill takes its name from an old earthwork on the headland that looked like a castle from the water. Alexander Agassiz, a Harvard marine biologist and oceanographer acquired the 40-acre peninsula and built his summer home there. Wikipedia says the mansion was commissioned in 1874; the inn’s story gives 1875, and its timeline also gives 1885. Two years after acquiring it he set up the Newport Marine Zoological Laboratory on the property.

Agassiz gave the land for the Castle Hill Lighthouse in 1887 (Wikipedia says he sold it to the government for $1), and the light was completed and first lit in 1890. It still guides ships through the East Passage of Narragansett Bay below the inn’s lawn, and the Coast Guard still owns it.

The family summered at Castle Hill until the Great New England Hurricane of 1938, which cut the peninsula off from the mainland and joined the waters of Castle Hill beach and the cove. Mrs. Maximilian Agassiz was so frightened that she never returned, and the house was sold to businessman J.T. O’Connell.

In World War II the Navy used the mansion as an improvised base for officers, because of its position at the mouth of the bay. After the war it became a summer hotel, and Grace Kelly became a repeat guest, swimming in the secluded east-facing cove. Thornton Wilder stayed too and wrote about the turret room.

The inn was later winterized for year-round guests. It has been employee owned for more than 30 years as part of Newport Restaurant Group, joined Relais and Chateaux in 2008 as the first Rhode Island member, and has been recognized by Michelin.

Tips for a haunted stay

  • Book an On the Hill room or the Turret Suite if you want to sleep in the house the stories are about.
  • Watch the sunset from the lawn or the Adirondack Bar, then walk the mansion halls once the dining rooms empty.
  • Walk down to the Castle Hill Lighthouse, which Agassiz gave the land for in 1887.
  • Traveling with a dog or children under 12? You will need a Harbor House or Beach Cottage instead of the mansion.
  • Payment is taken in full at booking and you must cancel 14 days out, so be sure of your dates.
  • Ocean Drive is one of the great coastal drives in New England; leave time to see the Gilded Age mansions on Bellevue Avenue.

Ghost hunts near Newport with Haunted Rooms

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Frequently asked questions

Is Castle Hill Inn haunted?

Staff and guests have reported a woman walking the mansion halls at night, believed to be one of the Agassiz family, and fine china thrown in the pantry, which some blame on Alexander Agassiz.

Who built Castle Hill Inn?

Alexander Agassiz, the Harvard marine biologist, built it as his summer home on the Castle Hill peninsula. Wikipedia says the mansion was commissioned in 1874; the inn gives 1875 and also 1885.

Did Grace Kelly stay at Castle Hill Inn?

Yes. The inn says Grace Kelly was a repeat guest who liked to swim in the secluded east-facing cove, and the Harbor Houses were a favorite hideaway.

Can children stay in the Castle Hill Inn mansion?

Rooms in the Agassiz Mansion are not for children under 12. Families are steered to the beachfront rooms and Harbor Houses.

Is Castle Hill Inn dog friendly?

Dogs are allowed only in select Harbor House and Beach Cottage rooms, not in the mansion or the restaurants.

Sources

Facts on this page are checked against the hotel’s own website, historic records and news coverage. Ghost stories are reported as guests, staff and local historians tell them. Read how we rate haunted hotels.

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About the authors

The Haunted Rooms Team runs public ghost hunts and overnight investigations at historic venues across the United States. We research every hotel in our guides using hotel histories, local archives, news coverage and the accounts of guests and staff, and we review each guide regularly so you are not booking a hotel that has closed or changed its name. Spotted something out of date? Let us know.

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