The detailed model of the Second Temple has been moved to the Israel Museum:
On a crest of Jerusalem's Hill of Tranquility overlooking the Valley of the Cross, the Knesset, the Supreme Court, Hebrew University's Givat Ram campus and the National Library, a model of the Second Temple has been relocated adjacent to the Shrine of the Book on the campus of the Israel Museum, in a spot where history and archeology intersect.
The Second Temple Model, which was located for the last four decades since its construction in the mid-1960's on the grounds of Jerusalem's Holyland Hotel, was moved to the Israel Museum this winter due to the construction of a new residential complex on the slopes of the Holyland hill.
The model, an exceptional cultural artifact depicting the Jerusalem of two millennia ago, was created before the reunification of the city at a time when Jews could not go to the Old City or the Temple Mount.
For the last 40 years, it primarily served as a tourist site, with about 300,000 visitors flocking to see it annually.
Although I own quite a few digital pictures of the model I've never had the pleasure of seeing it personally. It's good to know that care has been taken and that the model is being preserved.