How old is the 'Wailing Wall' in Jerusalem?

One thought:

Over 2000 years .

What is commonly called the "Wailing Wall" is believed to be what's left of the western wall of the Temple Courtyard in Jerusalem. This Temple (the Third one built on this spot after Solomon's and Zerubbabel's) was built by Harod the Great, starting in his 18th year of rulership, and continuing for about 46 years by the time Jesus was involved in his ministry in 30CE(John 2:20). Though the actual Temple sanctuary took just 18 months to build, the courtyards and surrounding buildings continued to be built up to about 6 years before the destruction of the Temple and Jerusalem itself, by the Romans in 70CE.