On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

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

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The Habsburgs' royal collections of art and wonders.

Apartment complexes built into huge repurposed natural gas tanks.

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

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A free library to stumble across, one of many placed worldwide if you know where to look.

A second generation sun-powered marvel lights up the night.

Cheap art and political theater in Vermont.

Ever hear of the Milazzo Cage?

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Hindu temple of the dead home to hundreds of long-tailed macaques.