Space Needle after renovation. Courtesy of Chad Copeland.

Space Needle after renovation. Courtesy of Chad Copeland.

Space Needle after renovation. Courtesy of Chad Copeland.

Newly-renovated Space Needle with downtown Seattle. Courtesy of Chad Copeland.

World's Fair grounds, 1962. Courtesy of Seattle Public Library.

Space Needle construction. Courtesy of Donald G. Moss.

Space Needle construction. Courtesy of Donald G. Moss.

Space Needle construction. Courtesy of Donald G. Moss.

Space Needle construction. Courtesy of Donald G. Moss.

Space Needle construction. Courtesy of Donald G. Moss.

World's Fair, 1962. Courtesy of Donald G. Moss.

Excavating the Space Needle foundation, April 1961. Courtesy of Seattle Public Library.

Space Needle construction worker, 1962. Courtesy of Seattle Public Library.

Space Needle construction work on canoe beams, 1962. Courtesy of Seattle Public Library.

Worker out on the Space Needle "Halo" during renovation. Courtesy of Rod Mar.

Workers install 11-foot glass barriers on open-air observation deck. Courtesy of Rod Mar.

Elevated work platform without weather-protective scrim. Courtesy of Space Needle LLC.

Gantry crane built for use during the project on the tower's northeast side. Courtesy of Space Needle LLC.

Installation of the Oculus Stairs. Courtesy of Space Needle LLC.

A total of 48 glass barriers, each measuring 11-foot by 7-foot and weighing one ton each, were hoisted to the 520-foot level using a gantry crane. Courtesy of Space Needle LLC.

Installation of The Loupe, the world's first revolving glass floor. Courtesy of Space Needle LLC.

Installation of The Loupe, the world's first revolving glass floor. Courtesy of Rod Mar.

Installation of interior floor-to-ceiling glass being installed on the 500-foot level. Courtesy of Rod Mar.

Before and After: Seattle skyline. Courtesy of Space Needle LLC and Olson Kundig.

Before and After: Space Needle close-up. Courtesy of Space Needle LLC and Olson Kundig.

Before and After: Interior 520-foot observation level. Courtesy of Space Needle LLC and Olson Kundig.

Before and After: Open-air 520-foot observation level. Courtesy of Space Needle LLC and Olson Kundig.

Before and After: Open-air 520-foot observation level. Courtesy of Space Needle LLC and Olson Kundig.

Before: Open-air 520-foot observation level. A wall and caging interrupted views for visitors. Courtesy of Space Needle LLC.

Before: Interior 520-foot observation level. Partitions interrupted views for visitors. Courtesy of Eirik Johnson.

Guests lean back onto the Space Needle's new glass benches called Skyriser, located 520 feet in the air. Courtesy of Space Needle LLC.

Guests enjoy The Loupe - the world's first revolving glass floor - located 500 feet in the air. Courtesy of John Lok.

Guests take the ultimate selfie 520 feet in the air on the Space Needle's new glass benches called Skyrisers. Courtesy of Space Needle LLC.

Close-up view of one of the Space Needle's glass benches called Skyrisers. Courtesy of Space Needle LLC.

The Loupe - the world's first revolving glass floor. Courtesy of John Lok.

Views from the Space Needle's 500-foot level. Courtesy of John Lok.

The Loupe, located on the Space Needle's 500-foot level. Courtesy of John Lok.

Views from The Loupe - the world's first revolving glass floor. Courtesy of John Lok.

The Loupe - the world's first revolving glass floor. Courtesy of John Lok.

Views from the Space Needle's 500-foot level. Courtesy of John Lok.

Views from the Space Needle's 500-foot level. Courtesy of John Lok.

Skyriser on the Space Needle 520-foot open-air observation level. Courtesy of Space Needle LLC.

Views from the Space Needle's 500-foot level. Courtesy of John Lok.

Views from the Space Needle's 500-foot level. Courtesy of John Lok.

Views from The Loupe - the world's first revolving glass floor. Courtesy of John Lok.

Views from The Loupe - the world's first revolving glass floor. Courtesy of John Lok.

Space Needle's Oculus Stairs. Courtesy of Space Needle LLC.

Enjoying the sunset at the Atmos Wine Bar. Courtesy of Space Needle and Rod Mar.

It's all smiles on The Loupe. Courtesy of Space Needle and Rod Mar.

Silhouettes in the sunset on The Loupe. Courtesy of Space Needle and Rod Mar.

Silhouettes on The Loupe. Courtesy of Space Needle and Rod Mar.

Sunset at The Loupe. Courtesy of Space Needle and Rod Mar.

The ultimate selfie on The Loupe. Courtesy of Space Needle and Rod Mar.

Walking on the world's first revolving glass floor at The Loupe. Courtesy of Space Needle and Rod Mar.

Guests enjoy Space Needle’s open-air observation deck, located 520-feet in the air. Courtesy of Space Needle and Rod Mar.

Guests enjoy Pacific Northwest inspired light bites from the Atmos Café, located on the Space Needle’s indoor observation deck. Courtesy of Space Needle and Rod Mar.

Guests enjoy downward views from the Space Needle’s Oculus Stairway. Courtesy of Space Needle and Rod Mar.

Guests enjoy downward views from the Space Needle’s Oculus Stairway. Courtesy of Space Needle and Rod Mar.

Guests take photos on The Loupe—the world’s first revolving glass floor—located 500-feet in the air. Courtesy of Space Needle and Rod Mar.

Guests take photos of the downward views from the Space Needle’s Oculus Stairway. Courtesy of Space Needle and Rod Mar.

Guests take a selfie on the Space Needle’s open-air observation deck, located 520-feet in the air. Courtesy of Space Needle and Rod Mar.

Guests take a selfie on the Space Needle’s open-air observation deck, located 520-feet in the air. Courtesy of Space Needle and Rod Mar.

Guests pose on The Loupe—the world’s first revolving glass floor. Courtesy of Space Needle and Rod Mar.

Guests enjoy The Loupe—the world’s first revolving glass floor—located 500-feet in the air. Courtesy of Space Needle and Rod Mar.

French Dip Bites - one of the new delicious menu items available at the Atmos Café. Courtesy of Space Needle and Rod Mar.

A scene from the virtual spectacular created for T-Mobile New Year's at the Needle - Courtesy of Space Needle

A scene from the virtual spectacular created for T-Mobile New Year's at the Needle - Courtesy of Space Needle

A scene from the virtual spectacular created for T-Mobile New Year's at the Needle - Courtesy of Space Needle