The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

60 feet of towering steel balances gracefully.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This banal Parisian entranceway is not what it seems.

France's national museum of scientific and industrial instruments.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

This nine-story building is the oldest standing skyscraper in D.C.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

When it comes to handsignals (and colonialism) rock always beats scissors.

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

The national park was once a plantation estate.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.