Collective Nouns for Places:
General:
* A cluster of houses
* A row of shops
* A group of buildings
* A collection of rooms
* A network of roads
* A maze of streets
* A sprawl of suburbs
* A chain of mountains
* A stretch of coastline
* A cluster of islands
* A valley of fields
* A forest of trees
* A grove of trees
* A patch of woods
* A field of flowers
* A desert of sand
* A sea of faces (for a crowd)
* A swarm of people (for a busy place)
More Specific:
* A constellation of stars
* A galaxy of stars
* A cloud of smoke
* A curtain of rain
* A plume of dust
* A tapestry of flowers
* A tapestry of fields
* A haven of peace
* A realm of dreams
* A city of lights
* A village of thatched cottages
* A kingdom of castles
Figurative:
* A labyrinth of bureaucracy
* A jungle of paperwork
* A desert of knowledge
* A sea of information
* A battlefield of opinions
* A garden of ideas
Note: Some of these are more metaphorical than literal. The best collective noun to use will depend on the specific context and the image you want to create.