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

Read a book next to a Midtown waterfall.

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

A crumbling hospital from the 1850s on Roosevelt Island.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

A terrific purveyor of natural history objects and curios.

A Natural History and Science Emporium.

Visit the monolithic tomb of America's most famous general.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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

Elevated freight railway turned wildly successful urban park.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This might just be the TARDIS of bookstores.

Arlington Cemetery exhibit dedicated to death and grieving.

A rare view of a preserved Victorian science museum.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.