This historic cemetery was inaccessible for several years due to dozens of land mines.

The place where World War I began.

Relive a Polish uprising via an enormous, century-old cyclorama.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

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

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Road signs in Namibia mark the location of one of the five major circles of latitude.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

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

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

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

The largest known Ancient Egyptian obelisk.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Ozymandias’ time-keeping temple.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

A battle between nature and architecture in the Cambodian jungle.

Memorial to the father of the Republic of China.

Enormous pendulum helps keep Taiwan's tallest building from swaying.