A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

The most visited, and possibly most controversial, museum in Germany.

One of downtown Berlin's last reminders of its Communist past.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This monumental work of art symbolizes the coming together of a previously divided city.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

A monument to the conquistador became increasingly controversial in the very city that he founded.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

Now containing the bones of the actual conquistador, instead of someone else.

Mysterious Incan ruins on a tiny island in Lake Titicaca.

Bolivia's needle-like rock formations.

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

A memorial to the victims of Argentina's "Dirty War."

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

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

As one of the world's largest hydroelectric dams this plant took two countries to get built.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

The stoutest tree in the world.

Every equinox this Maya pyramid puts on a spooky ancient light show.