Astronomical observatory above Lake Titicaca.

An ancient Incan convent on Lake Titicaca's Island of the Moon.

This giant Christ took first place in South America's religious arms race.

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

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

Constructed on the ruins of a convent, this tower saved countless lives.

Abandoned bull fighting ring, slowly falling apart in Uruguay.

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

The oldest café in Montevideo preserves its history as the city's bohemian hub.

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

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

Legend says this rock was once a chopping block for public executions.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Though it's not the largest, this one-kilometer outdoor market is reportedly the longest in Europe.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

The city-sized home palace of one of ancient Egypt's most powerful rulers gives us a rare look into the lives of the epoch's rulers.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

This wildlife trust is dedicated to orphaned elephant rescue and conservation.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

The farmhouse owned by the Danish author who wrote "Out of Africa" is now a museum honoring her legacy.

The home of half the world's population of critically endangered mountain gorillas.

Uganda's smallest savannah park is home to over 350 species of birds and mammals.