An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Ship skeletons haunt Baltimore's waterways.

The Decoy Capital of the World.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

This crumbling warehouse was once the third-largest cannery in the U.S. and the first in the world to can green asparagus.

The oldest house in the capital of Silicon Valley.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

More than 700 species live within this murky marvel of a swamp on California's coast.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

This restored log building was one of the first toll booths for travelers along the Northern Turnpike.

Pennsylvania's largest cave in Laurel Highlands becomes its first underground state park.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

The highest point in Maryland is only accessible by hiking through another state.

A steel skeleton is all that exists of what is supposed to be a replica of Noah's Ark

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A monument marks the location of the first successful steamboat demonstration.

America's most famous piece of self-built architecture.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.