This funerary monument to the guillotined king and queen of France became a political lightning rod and a site of pilgrimage for French monarchists.

A celebration of Norwegian independence, or public art gone wrong?

A bold and controversial statue of a Christmas icon, blending adult undertones with playful humor, stands year-round in a traffic circle.

This 100-foot tall tombstone memorializes victims of 40 years of nuclear testing in Kazakhstan.

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

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

Rusting ships sit in a desert where a sea used to be.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

One of the most photographed locations in the entire city.

Built by the Ancient Greeks, this chariot bridge is still in use today.

This abandoned Greek island was the last active leper colony in Europe.

After a catastrophic forest fire, a Greek artist transformed scorched tree trunks outside an old sanatorium into this haunting sculpture garden.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The Jardin d'Étretat is populated by over-sized raindrop sculptures that make funny faces at visitors.

A $600,000 pile of stainless steel balls makes for some rather divisive public art.

One of Australia’s most complete colonial prison complexes.

The longest pedestrian tunnel in the world.

Bunski Kanal is a hidden natural wonder where the emerald Buna River dramatically merges with the mighty Neretva through a narrow limestone channel.

Home to an astounding collection of carved skulls and other artifacts from Puebla's history

Walk through a well-preserved World War II Nazi prison and transit camp.

One of the world’s few undersea pedestrian tunnels connects Honshu and Kyushu islands.

Nestled against the majestic Ba Mountain, this historic spiritual sanctuary features one of the tallest outdoor Buddha statues in Southeast Asia overlooking the ocean.