One of the world's earliest skyscrapers.

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Man-made geyser that rises to the exact height of the Gateway Arch.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

The cluster of boulders near Fort Irwin is covered in military insignia.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

This neoclassic cathedral also houses what is believed to be the oldest clock in the Americas.

The fighters and conspirators that won independence for Paraguay held secret meetings at this historic house.

An unlikely neo-Gothic castle in the Paraguayan countryside.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

Only gap in the 30,000-mile span of roads called the Pan-American Highway.

A no-frills, DIY nature preserve manned by a U.S. expat who has dedicated his life to turtle conservation.

A pocket of jungle amidst urban expansion in Panama.

This softball diamond has a culture all its own.