Here are some pictures (see the red arrow):
In the second picture is the platform with the little trees growing on top.
What are they called?
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Perhaps a canopy?
- Architecture An ornamental rooflike projection over a niche, altar, or tomb.
- A protective rooflike covering, often of canvas, mounted on a frame over a walkway or door.
Or an awning?
A rooflike structure, often made of canvas or plastic, that serves as a shelter, as over a storefront, window, door, or deck.
A modern example at a hospital
coach gate or carriage porch is a covered porch-like structure at a main or secondary entrance to a building through which originally a horse and carriage and today a motor vehicle can pass to provide arriving and departing occupants protection from the elements. Source, Wikipedia
The normal word is porch. From Latin porticus. See