The remains of a military communications outpost still stand on this Greek island.

A settlement that was stopped in the middle of construction, leaving behind paved roads, curbs, light poles, a stormwater drainage system, and even a basketball court, but no houses.

A war-torn Olympic relic is being overtaken by graffiti and nature.

The Hungarian biochemist whose research helped develop mRNA-based vaccines for Covid-19.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

A relic of the Cold War tucked away in the forested hills above Bratislava.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

Microscopic scenes; some call it novelty, some call it art.

Steadily reminding Czechia of its past.

A surreal statue honoring Prague's favorite literary son.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

This fairytale-like structure is the last turf church ever constructed in Iceland.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

A huge enchanting public park just outside the ancient walls of Rome.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

This beehive tomb built for royalty sat hidden for over 3,000 years.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.