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

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

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

The first American department store, and home to the largest operating musical instrument in the world.

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

In the early 1800s, surgery was also a show.

Dr Barnes' $25 billion private collection of art and arboretum.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Huge masonic hall in Philadelphia with lavishly themed rooms.

A layered tribute to the work of mosaicist Isaiah Zagar.

The world’s first penitentiary, meant to be humane, drove men insane.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The 10,000 Torii shrine.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

This 700-year-old street food market features baby octopus and soy donuts.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

This ancient Hindu temple is covered in thousands of colorful statues and has a long mythological history.

This Gothic-style church is reputedly built atop the remains of one of Jesus's apostles.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.