Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This large, circular tomb is the final resting place of the first emperor of Rome.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An ancient octagonal weather station named for the eight Greek gods of wind.