Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

Besides being home to cave paintings and pre-Columbian Cuban archaeological remains, you get to take a boat through this stalactite and stalagmite covered cave.

A permanent outdoor art installation made up of more than 100 mushroom-shaped lights.

The neighborhood surrounding the memorial was the epicenter of the AIDS epidemic in Louisiana.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The second oldest continuously operating bar in Louisiana.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

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

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

Giant topiary dog once played a role in a terrorist bomb plot.

The world's largest reflecting pool is just two centimeters deep.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A turquoise lake within a volcanic crater.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

This huge green space packed with activities will make you forget you're in the middle of the Ecuadorian capital.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

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

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

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