A walk through the historic city center, under the streets of Seattle.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

Watch the newest land on the planet form before your eyes.

This black shoreline is made up of exploded lava particles.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A monument celebrating the idea of reaching inaccessible places.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Oriental bazaar in the heart of Sarajevo.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A 11-foot former president stands on a Kosovo street that also bears his name.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

Mysterious hillside with a continuously burning natural fire.

3,000 market stands in five former Zeppelin hangars.

The tallest hotel in Europe.

Stalinist skyscraper built with help of cryotechnology.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

2300-year-old Roman road connecting the empire.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.