The success story of Wiesbaden's congress and event center began on September 12, 1955 with the laying of the foundation stone and the ground-breaking ceremony for the construction of the Rhein-Main-Halle. The building was erected on the corner of Friedrich-Ebert-Allee and Rheinstraße, opposite the Wiesbaden Museum. Until the opening of Wiesbaden's main railway station in 1906, the former Taunusbahnhof and the former Rheinbahnhof were located on this site. The topping-out ceremony took place on September 14, 1956 and just a few months later, on April 21-22, 1957, the new exhibition hall celebrated its grand opening.

Over the years, the hall was repeatedly expanded and modernized. In 1971 , for example, a 1000 square meter "Holzhalle 9" was built, and in 1974/75 halls 6, 7 and 8 were added with exhibition hall 4 on the ground floor. In June 1981, the "Holzhalle" was demolished again and Halls 5 and 10 were built on the same site by 1983 .

In 1999 , the open inner courtyard, formerly located between the adjoining large Hall 1 and Hall 1a, was converted into a covered foyer as an atrium including Hall 11t. Between 2000 and 2002, Halls 1, 6 and 7 were redesigned. 2006-2007 saw the conversion of the main entrance and the construction of the new Congress Hall 12.

In2009 , TriWiCon-Holding was founded as an umbrella organization for the city's trade fair, congress and event activities and marketing company, thus combining Rhein-Main-Hallen GmbH with Kurhaus Wiesbaden GmbH and Wiesbaden Marketing GmbH.

After almost 60 years of performance, the Wiesbaden city council decided in September 2012 to demolish the outdated event halls. The demolition work began in August 2014 and the construction of the future congress and event center began in January 2015. In December 2015, the name of the former Rhein-Main-Hallen Wiesbaden was changed to RheinMain CongressCenter Wiesbaden. The new name is intended to underline the new significance as Germany's leading congress and event center both nationally and internationally. The topping-out ceremony was celebrated on September 9, 2016.

With its opening on April 13 - 14, 2018, the RheinMain CongressCenter will set new standards as an elementary component of the event industry in Wiesbaden and will have a lasting impact on the location as a destination for congresses, conferences and events.

The RheinMain CongressCenter was planned by the architectural firm Ferdinand Heide from Frankfurt am Main. The building design won the architectural competition with its open, transparent and daylight-flooded design, among other things.

In terms of urban planning, the building was integrated into the urban environment. The façades, their arrangement, structure and materiality reflect the interior qualities on the outside. They are based on the large buildings in the state capital. The Turkish travertine of the columnar façades provides a special aesthetic contrast to the concrete blocks of the floor and blends in perfectly with the cityscape.

With the use of natural stone, wood cladding and metal and glass elements, the new building enters into a dialog with the neighboring museum and the ministry. Circumferential high colonnades respond to the Kurhaus, State Theater and Bowling Green. The colonnades, the public passageway and the green spaces connect the building with the city. The architecturally sophisticated building forms the new gateway to Wiesbaden's city center in an impressive location.