One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This rustic old building is said to be the most photographed barn in America.

A six-ton wedding present for the King of the Scots.

The sign at the garden gate reads: "These Plants Can Kill."

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

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

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

A collection of full-size movie monsters opened to the public.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Historic medieval fortified city in southwest France.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

It was once the base for a series of domestic terror attacks.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

An architect transformed this abandoned cement factory into his castle-like workshop.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.