Once used for shipping in the late 1800s and early 1900s, the piers are now used for their views. The Avila Beach Pier is the first of the three piers and was first constructed in 1908 by the county of San Luis Obispo. Over two thousand local residents gathered there on April 30th, 1908 when President Teddy Roosevelt's 'Great White Fleet' anchored offshore. The Harford Pier was developed in 1873 and is now used for fishing, restaurants and commercial fishing. The last pier, the California Polytechnic State University Pier, is an educational and marine research facility.

St Giles' Cathedral, the historic "Mother Kirk of Scotland", has been a focal point of religious and civic life on the Royal Mile since 1124. Its architecture is a tapestry of centuries, but the cathedral is most famous as the epicentre of the Scottish Reformation under firebrand minister John Knox. While the main body of the kirk is imposing, its greatest artistic treasure is the Thistle Chapel, an astonishingly detailed 1911 Gothic space housing Scotland's chivalric order. You can admire the beautiful stained-glass windows, see an original National Covenant, and find the bronze memorial to Robert Louis Stevenson. Just outside the west door, the Heart of Midlothian set into the cobbles is traditionally spat upon for luck. Free tours and audio guides help unravel the complex history within this essential Edinburgh landmark.

Built by William Randolph Hearst in a cliff overlooking San Simeon in 1919, Hearst Castle now offers tours exploring its grand rooms, upstairs suites, cottages and kitchens. The Neptune pool has been fixed in 2018, and provides a fitting setting for its surrounding sculptures. If you want to know more about the history of the building, a theater with explanatory screenings is also available.

Christmas Island is one of the world's truly spectacular tropical seabird rookeries. It's not just the number and variety of seabirds or their magnificent splendour that make the island so remarkable, but also their sheer visibility. Around 80,000 seabirds nest here annually, with 23 breeding or resident species. Birds can be seen and heard everywhere on the island, at just about any time of the day. With just a little effort, birdwatchers can easily tick off a full list of residents in a busy week or a more relaxed fortnight. However, the elusive Christmas Island hawk owl keeps many coming back. More than 100 vagrant and migratory bird species have been recorded here, including eight breeding seabird species and one subspecies. The most numerous is the wide-ranging red-footed booby, which nests in colonies in trees in many parts of the coastal shore terraces. You may see the endangered Christmas Island frigatebird soaring above Settlement — it's the world's rarest frigatebird and nests only on the island. The golden form of the white-tailed tropic bird is an endemic subspecies unique to Christmas Island. Known locally as the golden bosun bird, this stunning bird is graceful in flight and has been adopted as the island's fauna emblem.