A semi-scholarly approach to sex.

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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

New York City's smallest piece of private property.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

One of the best views of the city is tucked away at the top of a water tower.

A large AIDS Memorial Pathway art installation provides a moment for quiet contemplation in this public park.

The longest and widest floating bridge in the world.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

The city's oldest Chinese restaurant offers local history and seriously good food.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

A beautiful final resting place for some of the noteworthy deceased.

A wall of chewing gum moonlights as collective art.

Granting the right of way to ships over surface traffic since 1917.

The first park built over a freeway is a brutalist masterwork.

Lie in a hammock where George Washington stood.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.