[1] Two lower floors of the building are part of the five-level underground Cascade Parking Garage, which opened in 1968.

In 1991, the building lost its Holiday Inn franchise and became the Cascade Plaza Hotel.

In 1993, a partnership purchased the building, and in 1996 it opened as the Ramada Plaza Hotel, after a total renovation.

A developer proposed converting the building to become residential around 2018, but the COVID-19 pandemic affected the plans.

The work was likened to a "baby United Nations building".