The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

An obelisk commemorating Lincoln's role in connecting the coasts.

The World's Largest Bull.

This 19th century Sioux City candy company is the home of the Twin Bing, a historic, chocolate-covered treat.

America's first National Historic Landmark is a 100-foot tall obelisk and gravesite dedicated to the only casualty of the Lewis & Clark Expedition.

Eight feet in diameter and more than 24 feet around.

An eclectic assortment of medieval architecture in a small Iowa town.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Western New York's largest independent bookstore doubles as a historical repository of all things Niagara Falls.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

Step inside Lucy, the world's largest "elephant."

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

A completely round house designed for the Atomic Age.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

Suspended above the ground in a thicket of towering Georgia trees is a modern architectural wonder.

An extravagant western hotel where every floor is the "ground floor."

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

This stunning home looks like it belongs in medieval Europe, not North Carolina.