The first American department store, and home to the largest operating musical instrument in the world.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

Two flush headstones mark the only known graves to be embedded in an airport runway.

Mexico's first public cable car soars over the congested streets outside Mexico City.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

It's believed this golden brick is part of the legendary lost Aztec treasure.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

Murals made with millions of colorful stones adorn the abandoned building.

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

Diego Rivera's massive tiled fountain and failed infrastructure project.

An unusual assortment of steerable wooden sleds is on display in a library in New Jersey where they were first invented.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.