The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

A statue of the second-tallest Dutchman in history.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

A luxury hotel housed in a former 15th century Gothic church.

A unique collection of gilded age mechanical pianos.

A miniature city, once ruled by the Queen of the Netherlands.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A beautifully eclectic mix of architectural styles.

Colorful and chaotic stacked hotel in North Holland.

A beautiful maze marks where three countries meet.

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.

Cat art as far as the eye can see.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

The Brutalist building harbors an unusual inverted dome that swoops down over its central sacred room.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.