In addition, the department has its own observatory located on top of the building.

A roof garden was created on top of the building.

"Does someone stand up on top of the building and tell the mortar people?"

They found themselves in a little translucent dome that sat on top of the main building.

"We can build an additional 12,000 square feet on top of the building."

Gary Manning was on top of the building across the street.

With the rock on top of the building this work against gravity is stored as potential energy.

In 1887 a third level and a clock tower were added on top of the existing building.

In 1890, two additional floors were built on top of the original 10-story building.

We will have a picnic on top of the building instead.