A former imperial sea-fortress and Soviet prison.

This former medieval prison now unlocks Estonia’s rich photographic history.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Relics from an era long gone, sit idle outside this Estonian museum.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

The first designer power line in Estonia.

Mysterious craters may have been home to an ancient cult.

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

Ride the rails on a train harkening back to a 19th-century marvel.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

The video game-themed street art first popped up in the French city.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

Abandoned blockhouses from Nazi Germany's Atlantic Wall erode into the sea on a French beach.

A French library that makes sure its love of books is writ large... giant in fact.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Explore the dark underground corridors of this graffiti-covered former military fortification.

A burial ground of rusting metal grave markers.

Love, knishes, and best wishes from this legendary Lower East Side bakery.