At least seven hues of blue and turquoise make this freshwater lagoon unique.

An important Mayan religious and trading center dating back to 200 BC.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

The youngest volcano in Central America.

Located in the mountains of Nicaragua, one man has spent most of life beautifying a massive cliff by hand.

Housed in a 20th-century prison, this small museum recounts local Nicaraguan myths.

A crumbling cathedral condemned by an earthquake.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

One of Western Africa's oldest mosques, this Timbuktu icon has stood for nearly 700 years.

Ancient Manuscripts showcase the civilization of West Africans during the Middle Ages.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

Magnificent Roman ruins lie vulnerable to destruction on the edge of the Mediterranean.

This triumphal arch is the only fully standing structure that remains from Roman-era Oea.