When did Circus Circus open?
Circus Circus opened on October 18, 1968, as a casino and amusement center without a hotel. Jay Sarno developed it with Stanley Mallin and other investors; its first hotel tower followed in 1972. The big top came before the bedrooms.
The original attraction made the circus part of the gambling room. Architect Homer Rissman's tent-shaped design housed a casino with aerial performers overhead. The opening-day Las Vegas Sun described a 90-foot-high big top, fountains outside and trapeze and high-wire acts above the gamblers. Its report, dated October 18, announced public admission for 10pm that night.
Why Circus Circus began without a hotel
Why no hotel? Sarno's initial project concentrated on a casino, food and spectacle. It brought people in to be entertained as well as to gamble, while offering no rooms of its own. UNLV's architectural history identifies the absence of a hotel as a financial weakness. Adding lodging in 1972 changed the kind of business Circus Circus could be: visitors could stay at the place that had drawn them in. The sources establish that sequence more securely than any single explanation of Sarno's motive. For the larger story of the man behind the idea, follow the Jay Sarno Story linked below.
From casino to resort: 1972–1975
1972–1975: the casino becomes a resort. The first hotel tower opened in 1972; UNLV's corporate archive describes a fifteen-story building with about 400 rooms. In 1974, Sarno and his partners leased the operation to Bill Bennett and Bill Pennington. This was an operating handover, followed by an eventual sale, rather than a simple sale completed in 1974. A second tower opened in 1975. More rooms made the property something a visitor could use as a base, not only an attraction to drop into.
Adventuredome and later ownership
1993: another kind of big top. The amusement park now called Adventuredome welcomed its first guests on August 23, 1993, according to the resort's thirtieth-anniversary announcement. Its pink dome is a later addition, separate from the original casino's tent form. The operator still describes a five-acre indoor park, with rides including Canyon Blaster. The family entertainment continued to grow long after the casino's opening.
2005–2019: the corporate chapter changes. Circus Circus's parent, Mandalay Resort Group, became part of MGM Mirage in 2005. MGM announced the completed sale of Circus Circus and adjacent land to an affiliate of Phil Ruffin on December 20, 2019. These dates mark changes of ownership, not new opening dates for the casino.
What to notice today
To connect that history with a visit, notice the distinction between the Midway's performance area and the later Adventuredome. The current operator advertises free live circus acts at the Midway; the dome's rides are ticketed attractions. Check the official attraction pages for the day's programme and access conditions. UNLV's 1968 aerial photograph shows the earlier frontage before the first hotel tower: compare the stages of growth without assuming every visible surface is original.