This "mathematical tower" was an observatory, early skyscraper, and place to reflect on all of nature and the cosmos.

Visiting this café is like visiting the Austrian grandma you wish you had.

The world's most important buildings shrunk to a tiny size.

The first modernist church in Europe.

This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.

Fantastic stories on a miniature railroad.

An ornate private entrance to the Vienna subway built specifically for the emperor.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

"World machine" built by an untrained Austrian farmer.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

The world's largest collection of intentionally useless inventions.

Visitors dip into a variety of pools of what was once ice.

Ride a dragon train into a world of dwarves.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

The Habsburgs' royal collections of art and wonders.

This cubist Vienna church building looks like some sort of alien stonehenge.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.