Nature and beauty amidst pollution and industrial wreckage.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Commemorating the spot where the famous scientist fed his pigeons.

Church featuring "high Victorian gothic" architecture.

There must be a pun in this haystack somewhere...

Four cars from the old system were once on display, but were removed in 2014.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

A decommissioned military complex that's now a modern industrial park.

An artist's cute bronze subway sculptures belie his violent artistic past.

Lie in a hammock where George Washington stood.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

New York City's only preserved family home from the 19th century.

Salute the leader of the proletariat.

A hidden "place of interment for gentlemen."

Plot your trip through the city on the sidewalk.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

A tiny church on a man-made island in the Adriatic.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Oriental bazaar in the heart of Sarajevo.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.