See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

The mounds at this site were reconstructed with the help of archaeologists and historians.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

A modern addition to the Greenpoint skyline.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

The former home of the army detachment that captured Geronimo.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

This North African stone complex is considered to be the oldest astronomical observatory on Earth.

This ancient settlement contains some of the largest earthen mounds in North America.

A gigantic 10-foot tall stone man.

The Underground Railroad passed right through this historic Brooklyn Heights church.

You must take the A train... to the last active cemetery in Manhattan.

Brooklyn's most iconic restaurant, resurrected.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

A tribute to the little-known group of women who were the first ever to fly aircraft in the U.S. military.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

The homestead of American patriot John Adams.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.