This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

This historic floating crane became an unlikely symbol of the port of Trieste.

One of the tallest lighthouses in the world also serves as a monument to the fallen of World War I.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

A men’s restroom became a sandwich shop.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

Dedicated to one of the darkest moments in Irish history.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This statue intended for children to enjoy became a minor political spat.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This historic patch of real estate offers a glimpse of colonial Boston.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The location of one of the first private Catholic schools in the country, providing a valuable sanctuary during the tumultuous period when Protestant and Catholic students were at odds.

This water tower commemorates the invention of the transistor on this site in 1947.

The first dish to bounce radio signals off the Moon, it was the forerunner to the U.S. Space Program.