The medieval prince founded the first library in Ukraine at Saint Sophia's Cathedral where he was interred.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

The deepest metro station in the world.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

340-foot statue built to honour the Heroes of the Soviet Union.

On the shores of Lake Kalamazoo, a plaque marks a fictional event where an island nation ran aground.

"The Most Boring Road in the State."

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

This sprawling bookstore spans four floors and has more than a million books in stock.

This historic stadium was built to host the first-ever FIFA World Cup.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

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

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

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

This stunning mass of ice spans 121 square miles and is still growing.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

It's just another skyscraper, but it's shaped like '90s cell phone.

An Inca spa, military outpost or maybe… both?

A Christian monastery stands on what was once a holy Incan temple.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.