This ancient Roman mausoleum built in the 2nd century was eventually converted into a fortress for the Popes duting the 14th century, and for the longest time was Rome's tallest building.
This 4th century basilica sits atop the Caelian Hill in Rome, overlooking the Roman Forum and Colosseum. It was built over a complex of Roman era rooms decorated with well preserved frescos that can still be seen today.
Charleston's port is one of the busiest on the East Coast. Here the Ravenel Bridge provides a backdrop for a container ship and a cruise ship in Charleston Harbor.
The Colosseum still stands in the Roman Forum after enduring nearly 2000 years of history. I wonder what architectural wonders of today will last into the distant future.