 
 <prompt> During which time period di inner city dey construct? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Anoda landmark na di old centre and di canal structure for di inner city. Di Oudegracht na one curved canal, wey dey follow di ancient main branch of di Rhine. E dey lined with di unique wharf-basement structures wey create two-level street along di canals. Di inner city don largely retain im Medieval structure, and di moat wey dey ring di old town still dey intact. Because of Utrecht role as fortified city, construction outside di medieval centre and im city walls bin dey restricted until di 19th century. Surrounding di medieval core, dey get ring of late 19th- and early 20th-century neighbourhoods, with newer neighbourhoods wey dey positioned farther out. Di eastern part of Utrecht still dey fairly open. Di Dutch Water Line, wey move east of di city for di early 19th century, require open lines of fire, wey con prohibit all permanent constructions until di middle of di 20th century for di east side of di city.``` 