Sniff the Titan Arum's rotting flesh.

The "Seinfeld" diner.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

A charming beach town in Turkey captures all the colors of the rainbow.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

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

A marvel of Byzantine engineering under the streets of Istanbul.

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

Dedicated to the life of a brave woman soldier.

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

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

Deep in the Thar desert, a temple crawling with thousands of holy rats.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.