A strip of neutral ground where the people of Tajikistan and Afghanistan come together to trade.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

The Avenue of Mausolea is a series of grand palatial tombs.

18m long sarcophagus of a constantly growing dead prophet.

The remains of an ancient city-state along the Silk Road.

This dark, damp, perilous tunnel is the only passage from north to south Tajikistan.

This was once the largest city in Kazakhstan, and a major stop on the Silk Road.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

A sober museum housed in the original administrative building of one of Stalin's largest gulags.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

A statue honors the children who fought Nazis in Poland.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

An eerie reminder to the horrors of World War II.

Japanese national treasure originally built in 593 CE.

Peace Park and the Atomic Bomb Dome.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This snug medieval lane is one of the narrowest streets in the world.