One of the most popular geologic formations is Arch Rock, a natural limestone arch, 146 feet (45 m) above the ground.

On the office tower itself, tall limestone arches and balconies protrude from the facade.

On the second floor most of the windows are topped with limestone arches.

The 76th Street entrance is to feature double doors of glass and nickel under a limestone arch.

The three-story building has original hand painted ceilings, Turkish marble floors, and limestone arches.

At the far end of the entrance hall is a cantilevered oak staircase which is approached through limestone arches.

Here, heavy sheets of limestone arch far up towards the range crest and are deeply notched where consequent streams have cut down their gorges.

The front door is framed with its original semicircular limestone arch with keystone and impost blocks.

The entrance is formed of three limestone arches with wrought iron gates.

A green patchwork of fields comes right to the edge of huge limestone arches and blow-holes.