"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Washington's iconic carousel has a nice piece of Civil Rights history.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The towering figures were created from the cemetery's fallen old-growth trees.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Largest Roman Catholic church in North America.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This grand gothic brewery has been pumping out suds for over a hundred years.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

A bit of retro transportation flair preserved in the world's largest department store.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

A semi-scholarly approach to sex.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A more than 260-year-old crypt built on Boston's oldest English burial ground.