This ornate mosque is said to hold the remains of Muhammad's granddaughter beneath its dome of pure gold.

3D war panorama in Damascus built with help from North Korea.

Crusader ruin with views over South Lebanon.

The ruins of a monumental tower in the heart of Lebanese mountains still puzzle archeologists.

Lebanese castle built by one man, over a lifetime.

What is left of the pillar of Saint Simeon, the voluntary martyr who climbed the column to give his sermons, remaining perched there for thirty-seven years.

Amid the rubble of Aleppo's Old Quarter, part of a historic market has been restored and re-opened.

One of the oldest and largest castles in the world.

Mysterious lost empire of the Silk Road.

Only a handful of these gorgeous historic waterwheels remain but even those are in danger from local unrest.

These engineering masterpieces are a dominant feature of the Belfast skyline.

This massive monument has been telling the time for 150 years—at a slight angle.

These murals stand as reminders to the troubled history of this Northern Ireland city.

It was once nicknamed "the most bombed hotel in Europe."

The only monument to name all of the passengers and crew who died on the RMS Titanic.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

An Irish cemetery filled with victims of political strife and violent conflict, including the grave of Bobby Sands.

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

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

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The heads of two giant mythological water horses honor Scotland's horselord past.