Places Ro Kalonaros Wants to Go

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Unlock the secrets of the conjuring arts.

This semi-hidden Manhattan restaurant is based out of a loading dock.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.