Sniff the Titan Arum's rotting flesh.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

Avoid gangster interaction while window-shopping.

The site of the deadly Triangle Shirtwaist Factory Fire.

Salute the leader of the proletariat.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

This cemetery features modernist statues as strange as its name.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

Walk into the 19th century without leaving Brooklyn.

Half of a house.

Final resting place of Typhoid Mary.

Golden Gate Park's historic collection of plants.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The home of aviation trailblazers, in a remote corner of the big city.

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

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

One-time largest man-made structure in the world will be a park in 30 years.

Adherence to strict Jewish laws is required to enter this ultra-conservative New York village.

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

Frida Kahlo's childhood home, now a museum of her life and works.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.