Very few get a first-hand look inside the building's most iconic feature. There is a secret staircase hidden in the Capitol dome, and it goes all the way to the top. Follow Tech Insider ...

The U.S. Capitol dome is really an illusion ... The ribs support the thin, outer shell, but the smaller dome inside can support itself. You won't need as much steel with this double-dome design ...

Inside, members of ... not to mention an iconic cast-iron dome added to the structure in 1868. Though some travelers express mixed reviews on whether the U.S. Capitol warrants the time and effort ...

For those who miss the old Dome on Atlantic Avenue ... Webster said there are also several symbols inside to remember Virginia Beach's past and future. This includes a parametric wall with ...

The Iowa State Capitol is a favorite of sightseers and history buffs thanks to its grand exterior and ornate interior ... and the 23-karat gold-covered dome that stands 275 feet above the capitol ...