This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

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

This museum offers an actual time machine back through Colorado's past.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

This iconic science fiction house still looks like something from the future.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

The final resting place of a 19th-century gold prospector and convicted cannibal.

This Colorado fire station has been in continuous operation for more than a century.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

The clock that sets them all.