A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A pair of connected skyscrapers form this symbolic gateway.

A Hollywood-sign replica with a typo on a remote hillside.

The ruins of this medieval castle on a foggy hill tell the story of a once-mighty empire.

A beautiful and moving memorial set on a little island in the middle of the river in Minsk.

Remains of the old fortification along the Western border of the USSR, now an elaborate defense museum.

A symbolic graveyard for the villages that perished during the Nazi invasion of Belarus.

A striking Soviet memorial commemorates the liberation of Belarus from the Nazis.

Mysterious hillside with a continuously burning natural fire.

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

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

Only spot in the world where an HVDC powerline, a single phase AC and a three phase AC powerline all meet.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

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

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A unique collection of Soviet military artifacts lies hidden away in a disused train, in the unrecognized Eastern European republic of Transnistria.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

Two distorted Romanesque columns hold aloft a mine cart in honor of laborers who died during WWII.

A curious cave church carved into the face of a cliff.

A swan-like monument on Obad's Hill honors those that defended the area from German invaders during WWII.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

This abandoned prison was so notorious that its name has become a metaphor throughout Albania.

A museum dedicated to secret surveillance.