One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

These naturally balancing rocks were pictured on every Zimbabwean banknote, up to the 100 trillion-dollar note.

Mosaics, storks, and brothels—this ancient city has it all.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

Tiny communists hammer away on the Olomouc Astronomical Clock.

A cheeky reminder about the value of art dangles above one of Olomouc's busiest streets.

This public elevator links the lower city to the upper city of Salvador.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

One of downtown Berlin's last reminders of its Communist past.

This legendary city has been a tourist attraction for centuries.

A giant Troll lurks under one of Seattle's oldest bridges.

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

Mysterious lost empire of the Silk Road.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

A pocket of jungle amidst urban expansion in Panama.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

Elevated freight railway turned wildly successful urban park.

A narrow strip of land is home to the tallest migrating dunes in Europe.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The southernmost outpost of the Russian Empire in colonial America.