A tower devoted to — and modeled after — the Divine Comedy.

A bright little alley in La Boca is a part of tango history.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

A hidden three-foot-wide house separates these two regal churches.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

Legend says this sacred tree was a gift from goddess Athena.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This striking sculpture of Icarus honors Greece's fallen flyers.

A sharp sculpture made of thousands of pieces of jagged glass.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The world's oldest bookshop still in operation.

This giant roadside goose has been hailing travelers into a small Ontario town for over 50 years.

A marvel of engineering built to prevent annual floods from devastating the city of Winnipeg.

Historic site where Native American hunters once trapped and killed buffalo.