An abandoned relic of the city's failed experiment with below ground transit.

Home of the only civilian casualty at the Battle of Gettysburg.

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Circleville is seriously smitten with this giant gourd.

A larger than life statue of a steelworker keeps watch over a closed steel mill.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

The largest earthwork effigy in the world.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The only subway station in the city that still makes use of gap fillers.

Red Hook's massive public pool, built by Robert Moses.

One of the most dazzling dioramas at the American Museum of Natural History is also one of the oldest.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

Cooks at this tiny takeout spot grind their rice flour in a stone mill each morning for perfect cheung fun.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

This recreation of a 19th-century dime museum is full of oddities.

Intricate, eye-catching, award-winning rubber sculptures liven up this Pennsylvania town.

These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

A wonderous place devoted to art and metal.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.