A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

The remains of 50,000 World War I soldiers rest under a towering arch overlooking the Alpine battlefields.

This Italian foot path winds through the mountains via 52 individual tunnels.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Stairs often replace streets on the steep slopes of this old mining town.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

Slum Settlement Filled With Mountains of Garbage.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

In Egypt's expanding metro area, many of the neighbors are dead.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

This bridge was constructed from the rubble of the infamous Bastille.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

The summer home of the largest colony of bats in the world.

A classic carnival ride that was carved to be untouchable.

One home in the historic strip hides secret compartments and the ghostly songs of long-gone canaries.

The old fire tower is one of the last of its kind in the United States.

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."