Pets aren't allowed on the Observation Deck.
No. Almost all observation decks — like the ones at skyscrapers, towers, or city parks with viewing platforms — do not allow pets. Service animals are the only exception.
This is a health and safety thing. Observation decks are crowded, enclosed spaces with lots of glass and limited room. Dogs and cats don’t belong there. Even if the park itself is pet-friendly, the deck typically isn’t.
If you’re looking at a specific park (like a national park with a viewing platform), check their rules. Some allow leashed pets on trails but not inside buildings. Observation decks are basically buildings.
Your pet will survive without the skyline view.
