An indoor botanical garden for tropical plants looks like a giant cylinder lying on its side.

Bronze statue marks the spinach capital of the world.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

Headquarters of the world's fourth largest Hasidic sect and the first of many "770s" around the world.

The house where Robert E. Lee planned the Battle of Antietam is said to be haunted by the ghost of a Civil War soldier.

Rural churches in the middle of nowhere with religious frescoes by famous artist.

World's largest magnetic research facility.

The longest and widest floating bridge in the world.

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.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A sharp bend in a dramatic river canyon cut through red rocks.

North Carolina's only restored fort from the French and Indian War.

Legends surround this jagged rock formation in the New Mexico desert.

Stay in a room with a view... of the bottom of the ocean.

A Nessie-like monster supposedly lurks in this lake.

A collection of heirloom roses tucked in a spectacularly beautiful botanical garden on Lake Atitlan.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This giant 200-year-old ginkgo is one of the largest in the United States.

The all-but-forgotten cemetery is Eastern Loudon County's largest African-American burial ground.

Designated as an Underground Railroad research site.

A 11-foot former president stands on a Kosovo street that also bears his name.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.