Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

A lush green oasis in the middle of Chicago.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Former bath house turns gastropub.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

This shop specializes in oddities and Victorian-inspired wonders.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Yo, Adrian!

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

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

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Alexander Hamilton’s creation caused quite a bit of controversy.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

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