This eclectic collection documents the wild legacies of "America's Wickedest Street."

A small store filled with animal skulls and other curiosities.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

A home covered with elaborate mosaic and other pieces of art.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

A rather vulgar example of the transition from Latin to the Italian vernacular.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The mystic whose incorrupt corpse still attracts the faithful.

This ancient Roman arch misled treasure hunters for centuries.

Architectural monsters are devouring this palace's every door and window.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.