GreatStone Castle Bed & Breakfast

429 N Ohio Ave , Sidney, OH 45365-2337 USA (Show map)


This magnificent mansion, on the National Register of Historic Places, has endured for ten decades as an Ohio landmark. The Castle is constructed of Bedford Indiana limestone, 18 inches thick, and features a wrap around porch supported by intricate stone columns. Three turrets give this massive structure its castle-like appearance. Interior design results in elegance and comfort. GreatStone is finished in rare hardwoods from various countries, transported by sailing ships and rail, to their final destination atop a hill in Sidney, Ohio. Overlooking the historic downtown, two acres of lawn, gardens, and 100 year-old oaks greet all who approach by the scenic circular drive.



Write A Review
  • Guest room4.7
  • Service4.8
  • Value4.6
  • Cleanliness4.9
  • Onsite Dining4.3

Girls Weekend Away

4.6 on March 02, 2015

Absolutely WONDERFUL! We made the trip even though additional snow was forecast. We are so glad we did! The home itself is so beautiful, and the spa was a welcome addition. If you appreciate handcrafted, original woodwork, pocket doors, high ceilings, and antiques, you must book a stay at the Castle! We enjoyed breakfast in the sunroom while watching it snow; massages and facials in the well-equipped spa; and wine and quiet reading time in front of the gas fireplace in the evening. Before we left, we booked for our next visit because we will be back many times.

Wonderful stay!

5 on October 13, 2014

This was my birthday gift, a night in a castle and a massage! What a wonderful way to spend a relaxing evening. We had the whole house to ourselves and spent hours admiring the beautiful woodwork and wonderful craftsmanship. Breakfast was just as we ordered. Frederick (the owner) graciously spent his time answering our numerous questions about the house and history. I highly recommend to anyone looking to spend a quiet evening in!

Thoroughly enjoyed our stay...

5 on June 23, 2014

My husband and I stayed for three days as a short vacation. We started with a spa package that really helped us to relax. We then made day trips to local sites, returning to our "home" for the evenings. It was a great get away, everyone was very gracious, and we would certainly stay here again.

Perfect weekend spa retreat!

5 on February 18, 2014

I have just returned from a weekend at GreatStone Castle, and recommend it to anyone. The mansion's architecture is amazing, and it is filled with beautiful antique furniture. The spa is modern, but was designed to fit in with mansion's ambience. Breakfast each day was cooked to order, and was served at my convenience in a sunny dining area. For all of this, the service was five star. Every member of the GreatStone Castle staff was friendly, helpful, professional and obviously focused on making me feel like a valued guest. I left feeling rested, refreshed, restored, AND looking forward to a return visit! -- Ruth D.

Honeymoon in a Castle!

4.8 on September 11, 2012

My new wife and I stayed here on a short notice looking after other plans fell through. A friend made the reservations so we had no idea what to expect. Needless to say, even if we had had the highest expectations, they would have been met & exceeded! Amazing food, staff, and a peaceful, comfy room.

This magnificent 17,000 square foot stone mansion completely exceeded my expectations

5 on April 27, 2012

As a business traveler, I was unable to book a room at my regular hotel in town on a recent trip, so I decided to give the GreatStone a try. I wasn't sure what I would find - since this is such an old building. What I found was a 17,000 square foot stone fortress/mansion that certainly lives up to its name! The building is old and magnificent both inside and out. I stayed in the Brighton Suite, which, I was told, is not the biggest one available. But it is more than twice as much room as a regular hotel room. This place is clean and has a pleasant fragrance - even for such an old building. The ceilings are 10 feet high. The 8 foot doors are solid cherry. They are works of art in themselves - very heavy and thick. The trim is also solid cherry around all the doors fire place and windows. There is a dressing room with a sink, then off of that the bathroom. Most importantly, the huge bed (a very high king-size) is probably the most comfortable bed I have ever slept on. Combine that with a super quiet atmosphere - and add all the interesting history (described in a book included in the room) - and you have a Bed and Breakfast that hotels cannot touch. The staff is very helpful. The breakfasts were always on-time and very good. After having stayed the first week, I immediately rebooked for the next week because I had to come to Sidney to continue the work. Honestly, I really love this place - and it makes going to Sidney so much more enjoyable. I heartily recommend this place for a magnificent alternative to regular hotels.

Just a little Me Time!!

4.4 on April 25, 2012

I had a very enjoyable experience at Greatstone Castle. I have never had a Spa Day. It meet every expectation and then some. I will be going back, but next time I will bring someone with me so they can have a great experience too!!!! Thanks Leah


5 on January 17, 2012

My husband and I went here as a christmas present for him. The castle was decorated in christmas decor everywhere, and it took our breath away. We stayed in the brighton suite and it was so wonderful. Everything smelled so good, the staff was so welcoming. We enjoyed everything. The breakfast was very fulfilling. We also had a spa package and we were blown away by how professional and amazing our experience was. We will surely go back and we recommend to everyone.

Memorable and more!

4.6 on January 04, 2012

From the very beginning Elizabeth was a great help in planning my New Year's Eve visit. The castle was decorated in great holiday fashion, beautiful trees everywhere, even in our room. Andrea was a gracious hostess in helping me get settled and with last minute details for my special guest arriving. We had arranged to have dinner prepared especially for us by the resident chef, Jereme, at the suggestion of Elizabeth. We cannot say enough about the superb 5 course meal we were served privately in the library. Breakfast was delicious both mornings and we were accommodated with a late breakfast time so we did not have to rush. The room was wonderful, perfectly cozy with plenty of room. And the bed. . . it was very hard to leave its comfort each morning. The room and the castle were very clean with everything one could need. The service was excellent, professional and warm. We will definitely return to GreatStone Castle, hopefully to add another memorable chapter to our book of life.

Weekend get-away!

4.6 on October 26, 2011

This was the first time staying at a B&B for my husband and I. The Castle was gorgeous, the room elegant and the service was wonderful. We really enjoyed our spa services......the staff was wonderful!!!!! Can't say enough..thank you for a wonderful stay.....:)

View More Reviews

Rooms & Rates


A favorite of honeymoon couples, this luxurious suite features tigerwood maple woodwork. The spacious bedroom is furnished with a four-poster king-sized bed, and has a romantic fireplace, cable TV, and a DVD/VCR.

  • Maximum Capacity: 2
  • Bathroom Private Bath
  • Beds 1 King

Nightly Rate: $150 - $150

Brighton Suite

This elegantly furnished suite consists of bedroom, dressing room, and bathroom. The woodwork is of bird's eye maple. It has a king-sized bed, cozy fireplace, cable TV, and DVD/VCR.

  • Maximum Capacity: 2
  • Bathroom Private Bath
  • Beds 1 King

Nightly Rate: $150 - $150


This lovely room is furnished with a Victorian High Back bed,a queen-sized bed, and Victorian marble-topped dressers. It has a charming private - but detached - bath, complete with a claw foot tub.

  • Maximum Capacity: 4
  • Bathroom Private Bath
  • Beds 1 Queen , 1 Double

Nightly Rate: $130 - $130


A room comfortably furnished with an antique bedroom suite. Perfect for a teen or parent traveling with a couple. Rented only with another room.

  • Maximum Capacity: 2
  • Beds 1 Double

Nightly Rate: $95 - $95

Canal Lake Lodge

Beautiful setting, privacy, cozy lodge. What more could you ask for? How about fishing on a private lake, horseshoes, shuffleboard, rowboats, a fully equipped kitchen and gas grill, a VCR, and acres of hiking! Breakfast foods - but not a cook - included. $150/night/double occupancy. Family and weekly rates available.(Nocturnal animals are to be expected in a wooded location & are not grounds for cancellation or refund)

  • Maximum Capacity: 10
  • Bathroom Private Bath
  • Beds 1 King , 1 Queen , 1 Double , 2 Twin

Nightly Rate: $0 - $150


Location Type

Small town


Dayton, OH (DAY) 35 miles

Directions to property:

Finding GreatStone Castle - I-75 exit 92. Four lights east (not including lights at I-75). Turn left on West Ave (one street before the courthouse). G0 4 blocks north to GreatStone Castle on your right.

Area Attractions

Antique Shopping, Aquarium, Historical interests, Lake, Nature area, Tours on-site, Aviation museum within driving distance, USAF, Picnic area, River, Ski area

Inn Details

Establishment type

Other, Private Home Bed and Breakfast, Bed and Breakfast, Historic Inn, Spa

On-site amenities

Air conditioning, BBQ grill, Board games, CD player, Computer, Conference Rooms, Copier, Desk, Fax Machine, Hot tub/whirlpool tub, Library, Movie library, Parking, Piano, Spa, Telephone, Videos, Wedding Facilities

Room amenities

Alarm clock, Bath robes, Coffee/Tea facilities, DVD Player, Fireplace, Fridge, Hairdryer, Internet Service, Ironing Board, Satellite/Cable TV, TV, VCR, Wi-Fi, Wired internet

On-site activities

Bicycle riding trails, Bird watching, Boating, Cross-country ski trails, Downhill Skiing, Fishing, Golfing, Hiking trails, Horseshoes, Shopping, Sight-seeing, Table Tennis

Visit Website


  • Check In:: 3 pm
  • Check Out:: Noon
  • Open All Year Round: No
  • Smoking Allowed: Outside only
  • Drinking Allowed: Yes
  • Alcohol Provided No
  • Suitable For Children: Limited over the age of 10 Sunday-Thursday
  • Childcare Provided: No
  • Guest Pets Allowed: No
  • Disabled Access Limited

Terms and Conditions

  • Accepted payments AMEX, VISA, Discover, Mastercard, Cash
  • Deposit Amount Required: 1 night's fee
  • Cancellations: Seven days prior notice required. Business travelers during week 24 hrs notice required. Reservations not cancelled in accordance with this policy will be charged. Weddings and receptions require 120 days notice of cancellation.



Frederick and Victoria Keller

Languages spoken


Resident Pets

1 friendly dog

Visit Website




  • Time Served: at guests' convenience
  • Serving Location: conservatory

Special meal options

Low fat , Restrictive , Vegetarian