Glass Floor at CN Tower
E160873
The Glass Floor at the CN Tower is a famous observation feature where visitors can look straight down through transparent panels to the ground far below, offering a thrilling and vertigo-inducing view of Toronto.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Glass Floor at CN Tower canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1400416 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Glass Floor at CN Tower Context triple: [Main Observation Level, nearbyAttraction, Glass Floor at CN Tower]
-
A.
SkyPod observation deck
The SkyPod observation deck is one of the highest public viewing platforms in the world, offering panoramic views from near the top of Toronto’s CN Tower.
-
B.
SkyPoint Observation Deck
SkyPoint Observation Deck is a popular observation and entertainment venue atop the Q1 building on Australia’s Gold Coast, offering panoramic coastal and city views.
-
C.
Gehry Tower
Gehry Tower is a distinctive, deconstructivist-style stainless steel-clad building in Hanover, Germany, designed by renowned architect Frank Gehry.
-
D.
Seattle Great Wheel
The Seattle Great Wheel is a large Ferris wheel on Pier 57 along Seattle’s waterfront, offering panoramic views of the city skyline and Elliott Bay.
-
E.
Sky Tower
Sky Tower is a prominent telecommunications and observation tower in Auckland, New Zealand, known for its panoramic city views and iconic place in the skyline.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Glass Floor at CN Tower Target entity description: The Glass Floor at the CN Tower is a famous observation feature where visitors can look straight down through transparent panels to the ground far below, offering a thrilling and vertigo-inducing view of Toronto.
-
A.
SkyPod observation deck
The SkyPod observation deck is one of the highest public viewing platforms in the world, offering panoramic views from near the top of Toronto’s CN Tower.
-
B.
SkyPoint Observation Deck
SkyPoint Observation Deck is a popular observation and entertainment venue atop the Q1 building on Australia’s Gold Coast, offering panoramic coastal and city views.
-
C.
Gehry Tower
Gehry Tower is a distinctive, deconstructivist-style stainless steel-clad building in Hanover, Germany, designed by renowned architect Frank Gehry.
-
D.
Seattle Great Wheel
The Seattle Great Wheel is a large Ferris wheel on Pier 57 along Seattle’s waterfront, offering panoramic views of the city skyline and Elliott Bay.
-
E.
Sky Tower
Sky Tower is a prominent telecommunications and observation tower in Auckland, New Zealand, known for its panoramic city views and iconic place in the skyline.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
glass floor
ⓘ
observation deck feature ⓘ tourist attraction feature ⓘ |
| access | elevator from CN Tower base ⓘ |
| associatedWith |
CN Tower
ⓘ
surface form:
CN Tower observation deck
|
| country | Canada ⓘ |
| designedToWithstand |
far more weight than typical visitor loads
ⓘ
the weight of several large hippos ⓘ |
| elevationAboveGround |
about 1122 feet
ⓘ
approximately 342 metres ⓘ |
| feature |
tourist photo spot
ⓘ
transparent floor panels ⓘ vertigo-inducing view ⓘ view straight down to ground ⓘ |
| languageOfSignage |
English
ⓘ
French ⓘ |
| locatedIn | CN Tower ⓘ |
| locatedInCity | Toronto ⓘ |
| locatedInCountry | Canada ⓘ |
| locatedInProvince | Ontario ⓘ |
| locatedOnLevel | LookOut Level and Glass Floor level ⓘ |
| material |
laminated glass
ⓘ
tempered glass ⓘ |
| nearbyLandmark |
Toronto Harbour
ⓘ
surface form:
Lake Ontario waterfront
Rogers Centre ⓘ |
| notableFor |
being one of the earliest major glass floors in a tower attraction
ⓘ
inducing fear of heights ⓘ |
| opened | 1994 ⓘ |
| operator | Canada Lands Company ⓘ |
| ownedBy |
Canada Lands Company
ⓘ
surface form:
Government of Canada (through Canada Lands Company)
|
| partOf | CN Tower ⓘ |
| purpose |
city observation
ⓘ
thrill experience ⓘ tourist entertainment ⓘ |
| regionTourism | Toronto tourism icon ⓘ |
| safetyFeature |
multiple glass layers
ⓘ
regular structural inspections ⓘ |
| safetyRating | designed to exceed building code requirements ⓘ |
| touristActivity |
lying down on glass for photos
ⓘ
walking on glass panels ⓘ |
| touristType |
adventure tourism
ⓘ
family attraction ⓘ |
| viewOf |
Lake Ontario
ⓘ
surface form:
Lake Ontario (partial views)
Toronto cityscape ⓘ streets directly below the tower ⓘ |
| visitorExperience |
thrilling
ⓘ
vertigo-inducing ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Glass Floor at CN Tower Description of subject: The Glass Floor at the CN Tower is a famous observation feature where visitors can look straight down through transparent panels to the ground far below, offering a thrilling and vertigo-inducing view of Toronto.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.