A public work of art that also provides some relief from the summer heat.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A cemetery for Slovenian notables also serves as a popular recreation space.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

A spherical "micro-nation" in the heart of Vienna.

Dine amidst exotic plants at this former royal greenhouse.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Designed as a reminder of one of the darkest moments in Austrian history.

A collection of intricate sculptures so small they have to be seen through a microscope.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

A diminutive statue that was inspired by the sculptor's own daughter.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A daily replay of the experiment that proved the rotation of the Earth.

This elaborate towering structure was once famed for its revolutionary height.

There aren't too many operational funiculars around, but Pittsburgh has two!

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.