A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A Serbian church lit by chandeliers made of weapons.

A misnamed well, with a deep dark past.

Structure built from the skulls of vanquished foes.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

A museum dedicated to the former country.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

This hidden gem reveals the history of Britain's first police force.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

This unique sculpture is often overlooked by pedestrians.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The world’s first penitentiary, meant to be humane, drove men insane.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

This public park was the site of the largest civilian disaster of the Civil War.

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

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.