The world's largest anatomically accurate brain sculpture.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

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

Elevated freight railway turned wildly successful urban park.

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

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

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

On holy holidays, Israel's second president used this room atop Mount Zion as a refuge to read the Torah.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Biblical beasts and endangered animal preservation come together in this Israeli zoo.

The home of the Dead Sea Scrolls is an abstract modernist dream.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

An ancient underground cultic temple where sunlight penetrates on the summer solstice.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

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

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.