Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Grand opera on a miniature scale.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Reproductions of nine banned oil paintings coyly hidden behind a curtain in a New Mexico conference room.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The world's second largest single-dish radio telescope, once used to contact E.T.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Come for the speed, leave in love with the desert.

Dig for your own trilobites in this goldmine of invertebrates.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Relics given to a Manhattan church to avoid seizure by the Italian government.

Huge spherical rocks in the middle of the prairie.