A trio of giant megalithic stones in the middle of a golf course.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

Saved by a logger, this Douglas fir is one of the last great old-growth trees in Canada.

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

An astounding collection of medical specimens, including bits of President Lincoln.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Home to items never before seen by the public.

The United States Capitol's former columns still stand.