This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

This restored 17th century synagogue is one of the few remaining structures in Morocco’s ruined Jewish quarters.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A recreation of the bar from the classic 1942 movie “Casablanca.”

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Morocco's largest Jewish cemetery.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Prescott institution is widely considered the oldest bar in Arizona.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This 39-foot-tall version of a Hopi figure stands in Arizona.

Once disputed as the largest sundial in the world.

The last such cabin in Arizona is a rare remnant of a bygone era of medical treatment.

A hidden beach at the end of a tunnel of mangrove trees.

This kitsch eatery is chock-a-block with bric-a-brac.

This small pedestal marks the spot of the first lot of land sold in Alexandria, Virginia in 1749.

A former major munitions plant that has been converted into a sprawling art space.

This rudder is one of the few remnants of a shipyard that once operated on the banks of the Potomac River.

America's first federal monument.

This statue honors the author's groundbreaking family story.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.