A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

Narrowest house in Boston.

A giant Troll lurks under one of Seattle's oldest bridges.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

Deep into the lower floors of Pike Place, find a date with fowl fate.

Geothermal waterfalls in Tuscany.

A (slightly) grownup take on the classic retro arcade.

These whimsical works of art tell the story of the city's past and present.

Ice cream stand, snack bar, and time capsule of milk conveyance.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

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

This museum and curiosity shop provides a glimpse into an often-overlooked past to show guests that there is beauty and wonder in the macabre.

An office built to look like a giant basket.

The playful side of the Columbus community is on full display.

Three bronze deer sculptures relax along the Scioto Mile.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

Known locally as "the giant head," this 14-foot LED sculpture has a photo booth in the neck where you can have a 3D picture taken and displayed.

An unassuming 13-acre park is home to over 12,000 roses.

The largest earthwork effigy in the world.

The video game-themed street art first popped up in the French city.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.