One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

Genesis of modern hydroelectric power.

Learn about the last river many crossed to find freedom from slavery in the United States.

This historic fort spans more the 300 years.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

An abandoned quicksilver mining town surrounded by the Big Bend parks.

This gravity-defying rock formation is one of Big Bend’s natural wonders.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

A beautiful museum filled with thousands of chairs.

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

These spectacular ruins were built by Spanish padres in the 17th century.

An underexplored, 130-foot tropical waterfall that you will have all to yourself.

This overlooked, beautiful convent hides an original Hieronymus Bosch among its many treasures.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

Quito's historic, main square dates back to the 16th century.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

It took 160 years to complete the most ornate church in Ecuador.

Dr. Farid Mattar's Monument of Peace.

An epic sculpture depicting a wagon and straining oxen.

A replica of a famous Greek statue adorns the front of the unusual home of architect and alchemist Humberto Pittamiglio.