The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

This extraordinary model train layout covers over 1,700 square feet, with multiple trains running simultaneously.

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

What once sat in the world’s spotlight is today a largely disused ghost complex.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

Illegal drag racing two stories beneath Chicago’s streets.

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

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A tribute to a hometown hero and surfing legend.

A unusual sanctuary for abused and exotic animals in South Jersey.

A well-preserved example of an early industrial operation in the northeastern United States.

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

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

Don't get it twisted: This is the oldest pretzel bakery in the United States.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

The Grand Canyon of Texas.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The national park was once a plantation estate.