The 14th-century ruins are said to contain healing powers.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

A cheeky architectural easter egg.

A massive, abstract lookout tower providing a panoramic view of Prague.

An existential riddle in the world's largest ancient castle.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

This sprawling, formerly elite sporting complex in Amman, Jordan has become a local picnic spot.

The first green space constructed on an elevated viaduct.

The history of radiation is on safe display at the foot of a radiation science laboratory.

This museum houses an imposing skeleton army comprised of creatures great and small.

A statue of the Soviet leader still stands in a quiet corner of Estonia’s most Russian city.