This funerary monument to the guillotined king and queen of France became a political lightning rod and a site of pilgrimage for French monarchists.

William Shakespeare and other famous historical personalities watch over a square in the heart of Mumbai.

It's a memorial to the beloved, ugly carpet that adorned the Portland airport (PDX) for 30 years.

The oldest sanctuary in the Sammarinese Republic.

More than 5,000 years old, D27 is the largest dolmen in the Netherlands and was already standing long before Stonehenge and the Egyptian pyramids were built.

In 1838, 859 Potawatomi Indians were forcibly removed from their village to begin a grueling march to Kansas. This location marks the first death.

When the water level in the Danube in central Budapest is low enough, there is a secret site telling the history of one of the most iconic bridges of the city.

This protected 19th-century façade once housed Mármoles Molina, a company specializing in funerary monuments.

A memorial for the victims of a plane crash that, at the time, was the deadliest plane disaster in American history.

It is an old prison, lighthouse, and castle once used to guard the port in Havana, Cuba

A family-owned and operated cultural center, Native food stand, and store offering a taste of local Indigenous history.

This former coal gasification plant found a curious second life as a popular public park.

A seven-story circular concrete tower, once the heart of Ferrara’s Eridania distillery, resembles a modern industrial Colosseum.

1960s modernist architecture in the form of a church and monastery at the foothills of the Andes.

The Créac’h Lighthouse is the most powerful lighthouse in Europe, which gives you, at night, an eerie sense of serenity.

Over 80 miniature sculptures around Uzhhorod old town that depict Transcarpathian history and culture.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Carved through granite boulder fields and primeval forests, this roaring river valley once served as the secret naval training ground for the legendary Tay Son insurgency.

Standing as a 12th-century architectural titan, this trio of brick structures boasts the tallest surviving Cham tower in Vietnam, reaching an impressive height of 38 meters.

Perched atop an isolated 779-meter mountain peak, this enigmatic Cham ruin remains shrouded in mystery regarding its age and purpose.

Hidden within a massive coastal lagoon, this secret mangrove forest serves as a vital sanctuary for rare and elusive water bird species.

Nestled against the majestic Ba Mountain, this historic spiritual sanctuary features one of the tallest outdoor Buddha statues in Southeast Asia overlooking the ocean.

The seamy, underground secrets of Portland's criminal past.