The restored and active Victorian-era final resting place of San Francisco.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

The miraculous hydrant that saved the Mission District in 1906.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Peek through the gates at this oasis from the city, full of Old English charm.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Once a dumping spot, now a park with a kayak launch.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A marvel of Byzantine engineering under the streets of Istanbul.

A Turkish ghost town abandoned in a population exchange with Greece.

Roman ruins, natural methane fires and a lovely beach.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

One of the first big sculptures anywhere in Australia.

Homage to the local produce now serves as a car dealer.

The Victoria-era quarantine station for Sydney.

This historic observatory contains the world's oldest refracting lens telescope.

A giant Australian fruit and tropical farm.

Three-story concrete ram with a permanent gift shop.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A massive metal lobster welcomes tourists to a roadside restaurant.