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

Where the lovelorn find a home for their sentimental keepsakes.

Where the leftovers of love affairs can live on forever.

This giant wire frame man sculpture is crouched in contemplation.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Living trees form the structure of an open-air palace.

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.