Atomic Dome

From a recent visit to the City of Hiroshima, Japan. The Hiroshima Peace Memorial (Genbaku Dome) was the only structure left standing in the area where the first atomic bomb exploded on 6 August 1945.

This is what the building looked like before the bomb was dropped.

Castillo de San Marcos

The oldest masonry fort in the continental United States, the Castillo de San Marcos is a large Spanish stone fortress built to protect and defend Spain’s claims in the New World. It’s a National Monument and, at more than 315 years old, it’s the oldest structure in St. Augustine, Florida.