A restored Pittsburgh house of God has been converted to a marvelous house of suds.

One of the oldest of its kind.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A layered tribute to the work of mosaicist Isaiah Zagar.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Abraham Lincoln's likeness rests at the top of this giant totem pole.

A charming museum of natural history featuring dioramas and exhibits made entirely by college students.

This historic hotel invented the chocolate brownie.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The stone labyrinth in this New Orleans city park was laid to symbolize healing in the wake of Hurricane Katrina.

This elaborate towering structure was once famed for its revolutionary height.

This is the house that spite built.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A diorama of the Civil War, fought by cats.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.