A battle between nature and architecture in the Cambodian jungle.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Singapore's landscaping project is home to 18 incredible Supertrees.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

The first Catholic church in Singapore is a Neo-Gothic colossus with a rich architectural history.

Malaysian fireflies create a dazzling display as thousands light up in unison.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Baroque celebration of the end of the Great Plague of Vienna.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Hot Doug's "Hot Dog" Stand.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Largest Roman Catholic church in North America.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

At 207 feet, one of the world's longest continuous escalators.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Breathtaking and huge 430 year old maps of Italy.

The only castle in North America to ever house European sovereigns.