Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, were in the city to view the under-construction Northern Spire Bridge.
They also visited the Fire Station, the iconic building which had recently converted into a music and arts hub.
See if you can spot someone you know in these wonderful scenes from Getty Images.
In case you missed it;
9. Saying hello in 2018
Catherine, Duchess of Cambridge speaks with children dressed as Mini Police officers as she visits The Fire Station. (Photo by Chris Jackson/Getty Images) | Getty Images
10. Fun times in Sunderland
Catherine, Duchess of Cambridge pictured on a visit to The Fire Station, one of Sunderland's most iconic buildings. (Photo by Andy Commins - WPA Pool/Getty Images) | Getty Images
11. Finding out more
Catherine seemed to have a great time as she chatted to the children in the Fire Station. Photo: ANDY COMMINS/AFP via Getty Images. | AFP via Getty Images