Quite simply the largest tree in the world (by volume).

A never-finished memorial to the heroes of the Napoleonic War has become "Scotland's Folly."

Tiki luxury on Nob Hill.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

The healing properties of this well attracted royals and commoners throughout the Middle Ages.

A solemn memorial in a majestic setting that honors a 1692 tragedy.

The longest continuously operating Elk's Lodge in the country.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Only hotel where you can legally launder money.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

An essential stop before plundering, BYO Cutlass.

An angelic, yet demonic-looking figurine presides over one of Glasgow's most ancient streets.

Cascading waterfalls mark the gateway to the ancient burial place of Clan Macnab.

Some believe that the stone once used to coronate Scottish kings resides inside this bar.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

An iconic red telephone box turned tiny art gallery.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

A sea cave with a waterfall and Viking past

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

Largest lake in Great Britain measured by surface area.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.