105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

Museum housed in underground tunnels that date back to Buenos Aires's earliest settlements.

A beautiful young girl said to have been buried alive in her coffin…

A gateway to a mysterious network of underground tunnels.

A tower devoted to — and modeled after — the Divine Comedy.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

An ode to one of the first concerts broadcast via satellite.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

Dedicated to one of the darkest moments in Irish history.

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

One of the indelible moments of the American Revolution took place at this location.

Historic Hull Street was actually the first street with a proper name in the Boston area.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A men’s restroom became a sandwich shop.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

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

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.