This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This ancient market is often referred to as the oldest shopping mall in the world.

The location of a citizen uprising that led to a gruesome act of mob justice.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This giant ice cream cone is the last remaining icon of a Salt Lake City staple.

Incredible sculptures inspired by obscure passages from the Bible.

Pyramid home to an obscure religious group that practices modern mummification.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The last king of Poland was interred in this church nearly 200 years after his death.

In a small Japanese garden off a busy Denver street, a memorial to a brave, principled politician.

An impressive museum dedicated to the resource that made the Scandinavian country rich.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

This 13th century Gothic brick castle is the largest in the world by surface area.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

One of the world's first dedicated bank buildings in the world is now the oldest one.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.