The only Bahá'í house of worship in North America and one of only a handful worldwide.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

Less a museum than a bizarre fantasy world created by artists and engineers.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Continuing the tradition of the dime museum in style.

This big empty pig is a nostalgic throwback to mid-20th-century Texas barbecue.

Wisconsin's most celebrated export gets the royal treatment on I-94.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

A snapshot of the city's fascinating voodoo culture.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

A display of magnificent stained glass windows is the first exhibit of its kind.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Elevated freight railway turned wildly successful urban park.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

This beautifully deceptive waterfall is something far different from what it appears to be.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

The stoutest tree in the world.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.