These gnarly desert trees produce the prized aromatic resin traded along the ancient incense trail.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

Groups of prehistoric tombs that dot the mountains of northern Oman.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

An imposing Omani fortress surrounded by date palm trees.

The largest historic preservation organization in the United States.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A medical facility that has been kept frozen in time.

This legendary dessert was served to Nobel laureates for decades.

A sculpture capturing the emotional moment when a refugee boy realizes he is about to be deported.

An unassuming plaque with a laminated poster shows the names of people who completed one of the most grueling journeys in Sweden.

The "geometrical" center of the country, as calculated in 1947.

Controversy surrounded the creation of this anti-fascist statue.

This Swedish sculpture park is a unique combination of ancient ruins and modern art.

Once the center of power for the region's various factories.

The palace for King Gustav III was never completed, but the foundation remains tucked away in this city park.

Believed to be the country's tallest waterfall, the Njupeskär is actually much smaller.

These mysterious circular formations are actually remnants of 19th century gristmills.

The world's biggest version of the popular Swedish souvenir.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

Gravity seems to fail at this intriguing Swedish attraction.