Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
This is a list of demolished buildings and structures in New York City. Over time, countless buildings have been built in what is now New York City. Some of them still stand today and can be viewed – however, many buildings have since been demolished. The reason for the demolition was often a lack of space; a larger building could fit. Many times the condition of the building was no longer adequate. The cost of building renovation is high, and demolition may have been easier.
Sometimes its style was outdated. However, opinions may change. Artistic standards of the time of construction, of demolition, of today, and of tomorrow may all disagree. Thus, many consider it detrimental to demolish buildings that were built to high artistic standards of their own time.
Accurate records of demolished buildings were not always preserved, so this list is presumably fragmentary.