After more than two years of work and more than $50 million spent on upgrades, the owners of one of downtown Dallas’ landmark towers are ready to show off the results.

The 60-story green glass Fountain Place is one of the skyline’s most familiar features. But you won’t recognize the inside of the rocket-shaped tower after owner Goddard Investment Group’s reboot.

Yards of dark stone and low ceilings have been tossed in favor of white marble and polished steel.

There’s not an inch of brass trim to be found.

The most striking features are the two-story-tall illuminated glass panels lining the walls that architects James Carpenter Design Associates and Gensler included in the redesign.

On Wednesday night, Fountain Place’s owners hosted guests for the formal unveiling of the project. (The first grand opening in 1986 featured a performance by the late great jazz performer Pete Fountain — the kind of bash that was the standard in those go-go days.)

Downtown's Fountain Place tower celebrated the completion of renovations with an opening party. (Steve Brown)

This week, the lobby and outside plaza were again packed with people coming to see the changes to the property.

“For the last couple of days I’ve felt like the mother of a bride getting ready for a big wedding,” said Goddard Investment Group’s Jim Wilson. “Now that it’s here, we are really happy with how it has turned out.

“We are getting a great response from potential tenants and are seeing a lot of activity.”

The finish of the construction inside the Fountain Place tower is only part of what’s happening on the block at Ross Avenue and Field Street.

Next door, construction is finishing up on the 45-story Amli Fountain Place apartment tower. When the residential high-rise starts opening in March, it will bring 367 luxury apartments to the property.

And across Fountain Place’s namesake water garden and plaza, a new restaurant and retail center will create more activity.

“When we open the food hall and the residential tower opens, it will bring a lot more energy to the property,” Wilson said.

When architects Harry Weese and Harry Cobb of I.M. Pei and Associates and famed landscape designer Dan Kiley created Fountain Place, they hoped the cypress-treed plaza with its fountains would be a gathering place.

But when the office tower closed at nights and on weekends, the property was more of a ghost town.

That’s going to change when hundreds of new apartment residents and retail customers land on the block.