These barriers stand as stark reminders of Northern Ireland's troubled past.

A museum marks and documents the site of the Titanic's launch.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

The site is dedicated to an investigative journalist whose murder triggered a political uproar that changed Slovakia forever.

Often mistaken as a medieval Gothic monument, this unique cornerstone only dates back to the 1980s.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

A sculpture of the beloved author surrounded by characters from his fairy tales.

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

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.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

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

The first modernist church in Europe.

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

An exquisite Baroque church in Vienna's old town.

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

A charming beach town in Turkey captures all the colors of the rainbow.

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

In Kazakhstan, a colorful cathedral with many lives once survived the most powerful earthquake in the region.