The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Breathtaking and huge 430 year old maps of Italy.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

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

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.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

A historic area for shopping and dining in Ketchikan's former red-light district.

The largest wooden building in the world now houses a fascinating collection of aircraft.

The world-record holder for the longest bridge stretching continuously over water.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

A memorial dedicated to the Tejano superstar Selena Quintanilla-Pérez.

The water in this preserved area spawns vegetation that gives it a deep green color.

A 131-year-old wunderkammer of Texas history.

The saga of the massive nut begins and ends in Texas.

Turning night into day in Victorian-era Austin to thwart a serial killer.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.