The topiary maze at the Habsburg hunting lodge.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The beautiful baroque library of the Hapsburg empire.

A crumbling hospital from the 1850s on Roosevelt Island.

The first piece of public art dedicated to LGBT rights.

New York City's smallest piece of private property.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

Plot your trip through the city on the sidewalk.

A prohibition era watering hole for the police.

Historical figures from New York City's Catholic community reside in Midtown.

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