The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

This monument is a stark reminder of the horrors of the Zanzibar slave trade.

In Zanzibar, a historic 19th-century palace is a reminder of the world's shortest war.

After sunset the heart of Zanzibar's historic Stone Town neighborhood transforms into a culinary playground.

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

Museum housed in underground tunnels that date back to Buenos Aires's earliest settlements.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

The birthplace of the very first human resident born in Antarctica.

The best place to send your postcards home from Antarctica.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

Scene of the grisly murder of two Norwegian women in 1873.

Civil War Fort on an island in the Boston Harbor.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

The ruins of New Zealand's largest classical-style church.

This aluminum “stairway to heaven” has impaled at least a couple of birds.

A serene plaza that commemorates one of the Granite State's most iconic figures.

Maybe the only missile installed in a public park, this Cold War leftover was one of the first to carry a nuclear warhead.