The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

The birthplace of the Ford Model T is now a museum full of antique cars.

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

The unusual medical inventions of the man who gave the world Corn Flakes.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

The world’s largest Masonic temple was saved by the White Stripes.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling bookstore spans four floors and has more than a million books in stock.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The first piece of public art dedicated to LGBT rights.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

The most confusing clock in New York.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

A semi-scholarly approach to sex.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.