The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This statue of the "father of television" stands prominently in the United States Capitol.

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

Corn-inthian columns with a uniquely American take on neoclassical architecture.

A promising candidate for the lost rock laid by George Washington was unearthed, but the hunt is still on.

The elevator that makes it possible to fly American flags in bulk over the U.S. Capitol

Look closely and you’ll notice that the color changes a third of the way up the tower.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

During Prohibition, the U.S. Congress had an "official" bootlegger, with his own Capitol Hill office.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

100 years later, they're still down there.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

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.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.