The day is here! If you've been living under a rock and haven't heard, there is a massive new hotel/convention center/destination out near Denver International Airport - and it's opening up Tuesday morning.

The Gaylord Rockies Resort and Convention Center will open to the public on Dec. 18. The resort features 1,501 hotel rooms, 486,000 square feet of meeting and convention space, and a 47,500-square foot sports bar (complete with a 75-foot tall television).

Construction on the complex took three years, 1,500 workers and hundreds of thousands of man-hours. The complex is the first new Gaylord property in 10 years, according to the Denver Business Journal, and the fifth overall. The other four Gaylord properties are in or near Orlando, Florida; Dallas, Texas; Nashville, Tennessee; and Washington D.C.

RELATED | Inside Colorado's new Gaylord Rockies Resort and Convention Center

In addition to the massive convention center space and sports bar, the main part of the Gaylord, the Grand Lodge, also has four restaurants that form a ring along the top of the lodge.

While guests will be invited inside on Tuesday, most of the corporate business planned at the site won't begin until 2019. Despite this, vacationing families and curious locals will still be welcome beginning this week.

While the general public can visit most parts of the hotel, a 22,000-square-foot indoor/outdoor pool and lazy river area is reserved for hotel guests, according to the Business Journal.

The Gaylord is already a hit before even opening; 1.1 million rooms have been reserved through 2028, according to building staff.

The ribbon-cutting ceremony on Tuesday will take place in the main lobby of the Grand Lodge and begin at 11:30 a.m. The 85-acre property is at 6700 N. Gaylord Rockies Blvd. in Aurora, Colorado.

9NEWS got a sneak peek inside the facility. You can check out all of what we saw and what to expect at this link.

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