A floating cat sanctuary on an Amsterdam canal.

The spectacular history of spectacles on display.

A unique collection of gilded age mechanical pianos.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

A diminutive, thousand-year-old church believed to be the smallest in Ireland.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

This unusual elevator doesn’t stop or slow down.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

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

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

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Theme park featuring miniature replicas of European monuments.

Cozy basement bar sports an inventory of over 2,000 beers.

Lavish royal estate punctuated with heated greenhouses.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This Costa Rican topiary park is a surreal garden of unearthly delights.

An exquisite tunnel of cascading flowers.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

A 16th-century horror show built in a lovely Italian garden.

This vanilla farm serves its crops at an on-site café.

This centuries-old Italian chapel hangs midway down a sheer cliffside.