A collection of collections ranging from dentistry to minerals.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The tallest lighthouse in the Nordic countries was also the site of a bloody World War II battle.

Finland's northernmost zoo is home to the country's only polar bears.

Nuclear waste experts study this prehistoric crater lake to envision landscapes one million years in the future.

A little-known sculpture park of contemporary environmental art in a Lapland forest.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A floating cat sanctuary on an Amsterdam canal.

Museum preserving torture methods from the past.

This honeycomb-textured tafone looks like a petrified troll head.

The church's remarkable frescoes incorporate Finnish artist Hugh Simberg's trademark themes of death and the supernatural.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

This fantastical icy castle is built anew every winter.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

Abandoned railway line circling the city of Paris.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.