There’s a hidden military meme engraved on the World War II Memorial.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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.

When it opened during the final years of the embargo, all the drinks and cigars were free.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

This poor little statue is the most vandalized memorial in Washington.

The last remaining building in Washington, D.C., built by H.H. Richardson, one of America's most iconic architects.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

The district's only illusionarium supports free writing programs for local students with every purchase.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

The longest step street in the city.

One of the oldest adobe structures in Northern California.

Today's aerospace industry can be traced back to one man and his gliders.

This 252 step staircase offers stunning views of San Jose.

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.

A giant chess set, minus the psychedelic drug trip.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.