Cold war icon and onetime "hole" in the iron curtain.

Dedicated to nine marines from Massachusetts who perished during the Beirut bombings.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

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

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

Legends surround an ancient tree trunk riddled with nails for good luck.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

This museum is dedicated to the little known ancient Roman history of Vienna.

A silly medieval mural preserved on the side of a Viennese house.

The solemn exterior conceals an opulent interior of this 17th century church.

An exquisite Baroque church in Vienna's old town.

The Habsburgs' royal collections of art and wonders.

The phrase "the shot heard around the world" was coined after a skirmish at this bridge.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Garments from across the globe call this hidden gem home.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

The largest fountain in Bratislava.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

Dedicated to a synagogue that was destroyed after having survived World War II.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.