Story highlights "This is what 'New York values' are really all about," Trump's campaign said

The Manhattan billionaire often references 9/11 on the campaign trail

(CNN) Donald Trump made an unannounced stop at the National September 11 Museum Saturday morning in New York City.

Trump did not visit the memorial itself but the adjacent museum, which he toured with his wife, Melania, and his staff. Michael Frazier, a spokesman for the museum, later said Trump made a $100,000 donation.

After the visit, which lasted less than a half hour, Trump and his entourage headed back to Trump Tower. They declined to take questions from reporters.

A statement from Trump spokeswoman Hope Hicks said the Trumps "were given a tour by museum president and CEO Joe Daniels, along with other museum officials and representatives of the (New York Police Department) and (Port Authority Police Department)."

"They were incredibly impressed with the museum, a monument representative of all of the wonderful people who tragically lost their lives and the families who have suffered so greatly," Hicks said.

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