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
If the space on top of the "platform" is accessible from inside the building, the term "terrace" would be appropriate.
A portico is the structure that gives shelter to those getting into or out of a carriage at a buildings entrance. It is a low roof on columns but without walls allowing the carriage to drive through.