The first modernist church in Europe.

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.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

An exquisite Baroque church in Vienna's old town.

The Habsburgs' royal collections of art and wonders.

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

The topiary maze at the Habsburg hunting lodge.

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

This house turned museum chronicles the life and work of Richard Neutra.

The first all glass and steel residence in the United States.

An homage to the man who built California's version of Venice.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

An iconic location along the Los Angeles River where countless movie scenes are filmed.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The blinking light atop the iconic landmark has been sending secret messages for decades.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.