New York ? Watch out, Las Vegas: New York City wants to become the new No. 1 place to tie the knot.

Mayor Michael Bloomberg has given City Hall’s famously gritty marriage bureau a gleaming makeover, with fewer lines, more space to take photographs, video screens to monitor wait times and wedding chapels with gauzy curtains and walls painted in muted tones.

And in case the newlyweds-to-be forget any essentials, the space features a small shop that sells fresh flowers, disposable cameras, tissues, hairspray and sparkly fake diamond rings for $9 each.

The sleek 24,000-square-foot space officially opens Monday, replacing a grubby, cramped, poorly lit office. It is designed to put some glamour into City Hall weddings while bringing more tourism dollars to the city.

“We want to be the wedding destination of the world,” said Deputy Mayor Patti Harris.