From "Where does the name Lady Bay come from?" to "What would a map of the caves look like?".
Here's how we have got on with answering your questions.
We put the question to the city council's archaeologist Scott Lomax who said there isn't just one cave system across Nottingham, but in fact hundreds of cave complexes.
He said the caves have never been joined together but here is a map of them across the city.
The main concentration of caves is in the city centre, around the medieval town, between Parliament Street and Castle Boulevard and Canal Street, he said.
He added: "Caves do, however, extend out of the city centre, predominantly along roads including Mansfield Road, Derby Road and Alfreton Road, reflecting post-medieval and modern development of the city.
"There are some caves in suburban areas such as Old Basford, Sherwood, The Park, Sneinton and St Ann's. There is one cave beneath Wollaton Hall."
Mr Lomax said more caves were being discovered all the time so the above map will change.
We went underneath a city pub to explore a newly discovered cave...
Mr Wahid was prompted to ask the question after a lengthy debate with a friend from Banbury about how many young people there were in the county, and said he "was intrigued to see what our population looks like in regards to age".
After wading through a lot of figures from the Office of National Statistics, we found the average age of someone from Nottinghamshire is 41.5 years.
These are the most recent figures and are from 2015.
Martin contacted us because he is often asked by people visiting the area and "it is something I have often wondered myself".
After a trawl of the internet and conversations with historians unfortunately it still remains a bit of a mystery.
There are, however, several theories about its origins:
If you know the answer, do please get in touch.
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