A massive collection of petroglyphs dating back some 40,000 years.

A unique museum dedicated to culture and artistry of carpet weaving.

Resonant stone, that has been played since prehistoric times.

A gigantic collection of teeny, tiny books.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

It took 160 years to complete the most ornate church in Ecuador.

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.

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

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

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

An impressive century-old, to-scale topographical map of Guatemala.

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

Physicist’s epitaph provides final confirmation to a career of turmoil.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This once-derelict building is now one of the most beautiful bookstores in the world.

A larger-than-life statue of the German revolutionist stands proud in a small town where he never lived.

Enormous sandstone towers loom within a Czech forest.

The most famous location in China was home to whole dynasties worth of imperial rulers.