This famous city eluded concrete detection until the early 2000's.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

When the Soviets destroyed the historic Armenian monastery they somehow left its bell tower intact.

A miraculous three-handed portrait of a saint can be found inside this church.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

The reconstruction of this prominent building fulfilled a long-written command.

A black cat protests the City Guild in Riga's Old Town.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The Guardian of Tallinn.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

Icelandic settlement in Manitoba established in 1875.

The intense competition of the 19th-century fur trading industry played out at this fort in Western Canada.

Colonial architecture meets urban art in this sprawling open-air gallery.

This pre-Hispanic apartment complex also includes ancestral paintings that point to its military past.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

It's believed this golden brick is part of the legendary lost Aztec treasure.

The only castle in North America to ever house European sovereigns.

After it was missing for a decade, this 40-foot statue of Our Lady of Guadalupe was found and returned to a place of honor—with a little help from a tropical storm.

Hotel designed around a 16th century Mexican bullring.

This ornate church designed by a self-taught architect is an eclectic masterpiece in the heart of Central Mexico.