The Westin Harbour Castle
1 Harbour Square, Toronto, Ontario, Canada, M5J 1A6
Experience the perfect blend of comfort and convenience at The Westin Harbour Castle, Toronto, the primary venue for the CTBUH 2025 International Conference. Situated on the revitalized waterfront, this hotel offers serene views of Lake Ontario while providing seamless access to downtown attractions.
Attendees will appreciate the hotel’s amenities, including a state-of-the-art fitness studio, indoor pool, and award-winning green practices that ensure a sustainable stay. We encourage all attendees to book their accommodation at The Westin Harbour Castle to fully immerse themselves in the conference experience and enjoy the convenience of staying at the event venue.
Early Bird Special!
CTBUH is offering a limited number of complimentary upgrades from the standard North Tower Traditional rooms to the recently renovated South Tower Premium Room! Secure your booking early to get your free upgrade!


Left: South Tower Premium upgrade room (limited complimentary upgrades available!); Right: Standard North Tower Traditional King room. ©Westin Harbour Castle
Nightly Rate: CAD409 + applicable taxes* (approx. US$286+) per night
Eligible Dates: Enjoy our special conference rates up to two days pre/post official conference dates – Friday, 3 October through Saturday, 11 October
Room Type: North Tower Traditional King/Double, rate is not inclusive of breakfast
Booking Deadline: Reservations must be received on or before 5:00PM local time at the hotel on Wednesday, 10 September 2025.
Deposit: A deposit equal to one night’s stay is required to hold your reservation at the time of booking.
Cancellation: Full refund of deposit will be given to cancellations received up to 72 hours prior to arrival. For cancellations received within 72 hours of arrival, the deposit is non-refundable.
Upgraded Room Rates: CTBUH has also secured the below preferential rates on the following upgraded room types. If interested, please contact the hotel at the phone number below to book:
South Tower Premium = CAD449+ per night
South Tower Studio Suite = CAD529+ per night
One-Bedroom Suite = CAD629+ per night
For questions or special assistance, call Marriott toll free at 1-888 627 8559 and state that you are with the “Annual Conference – Council on Tall Buildings and Urban Habitat” or provide the unique code “TBU” to reserve at the special rate.
*Hotel room rates per room per night are in Canadian funds and are subject to applicable Federal, Provincial, or Municipal taxes and fees at the time of check-out (currently 13% HST, 6% Municipal Accommodation Tax, and 2.5% FIFA tax).