Question: What are the current uses of the building known as Hitler's mountain retreat?

Context paragraphs:
International Herb Symposium: The International Herb Symposium is a biannual conference held at Wheaton College in Norton, Massachusetts to discuss botanical medicine, herbal conservation and the survival of First World herbal traditions.  The conference is one of the largest herb conferences held in the United States and the only worldwide herbal conference with an explicit international focus, including speakers from Africa, Tibet, Central and South America and American Indian tribes.  Over 100 workshops are typically presented during a weekend, ranging from indigenous traditional to scientific uses of botanicals.  The conference is organized by Rosemary Gladstar and Sage Mountain Retreat Center and features speakers from all over the world.

Carrier current: Carrier current transmission (originally called wired wireless) employs guided low-power radio signals, which are transmitted along electrical conductors.  The transmissions are picked up by receivers that are either connected to, or a short distance from, the conductors.  Carrier current transmission is used to send audio and telemetry to selected locations, and also for low-power broadcasting that covers a small geographical area, such as a college campus.  The most common form of carrier current uses longwave or mediumwave AM radio signals that are sent through existing electrical wiring, although other conductors can be used, such as telephone lines.

Werner Wolff (photographer): Werner Wolff (11 June 1911 – 26 January 2002) was a German-born American photojournalist known primarily for his work in association with the Black Star agency from 1945 to the late 1980s.  Born in Mannheim, Germany in 1911, Wolff emigrated to New York City in 1936, initially working for Alfred Eisenstaedt as a darkroom technician and then starting his own photographic agency, "Camera Features".  After a brief stint in the U.S. Army Signal Corps during World War II, Wolff became a correspondent for the weekly Army magazine, "YANK".  Wolff reported on major campaigns in Italy and was one of the first to photograph Hitler's mountain retreat in Berchtesgaden after its capture by the Allies.

Mountain Retreat, California: Mountain Retreat is an unincorporated community in Calaveras County, California.  It lies at an elevation of 4052 feet (1235 m).

Kehlsteinhaus: The Kehlsteinhaus (known as the Eagle's Nest in English-speaking countries) is a Third Reich-era building erected atop the summit of the Kehlstein, a rocky outcrop that rises above the Obersalzberg near the town of Berchtesgaden.  It was used exclusively by members of the Nazi Party for government and social meetings.  It was visited by Adolf Hitler on a total of 14 documented instances.  Today it is open seasonally as a restaurant, beer garden, and tourist site.

An American Trilogy (album): An American Trilogy is a box set of three remastered albums by Mickey Newbury recorded between 1969 and 1973 at Cinderella Sound studio, in Madison, Tennessee, alongside an additional album of rare and unreleased recordings, entitled "Better Days".  It was released in 2011 on Saint Cecilia Knows, in association with the Newbury family and their label Mountain Retreat.  The box includes the albums "Looks Like Rain" (originally released on Mercury records in 1969), "Frisco Mabel Joy" and "Heaven Help The Child" (released, respectively, in 1971 and 1973, both on Elektra records).  All three albums has been remastered for the first time on CD from the original master tapes, long thought to have been destroyed in a fire.

Montreat Conference Center: Montreat Conference Center (also known as the Mountain Retreat Association) located in Montreat, North Carolina, United States, is a conference center serving the Presbyterian Church (U.S.A.).  The word 'Montreat' is a contraction of the words 'Mountain Retreat'.

Ray A. Robinson: General Ray Albert Robinson (June 1, 1896 – March 26, 1976) was a United States Marine Corps general who served in the Corps more than 40 years.  His long and colorful career included service in France during the First World War (as Aide-de-Camp to Smedley D. Butler), action at Guam and Iwo Jima in World War II, sea duty, and China service between World Wars.  He also served in 1929 as Officer in Charge of the Marine Detachment which built President Herbert Hoover's Rapidan Camp mountain retreat near Criglersville, Virginia.  Robinson twice earned the Legion of Merit with Combat "V" during World War II — the first for outstanding service in July and August 1944, as Chief of Staff of the 3d Marine Division during the planning and execution of the recapture of Guam; and the second for outstanding service from October 1944 to March 1945, as Chief of Staff of the 5th Marine Division during the preparation and combat phases of the Iwo Jima campaign.

General Walker Hotel: The General Walker Hotel was a hotel for US troops after World War II in the mountain retreat of Obersalzberg, Germany.  The former "Pension Moritz" boarding house, boasting opulent accommodations and sweeping views of the Bavarian countryside and Alpine scenery, had been opened in 1878 and renamed "Platterhof" in 1928.  After the Nazi seizure of power, it became a "people's" hostel for visitors to the extended containment area around Hitler's headquarters at the nearby "Berghof" residence.  It was subsequently rebuilt into a luxury hotel for visiting dignitaries and in 1943 was converted into a military hospital.  SS guards.

Kehlstein: The Kehlstein is, at an elevation of 1881 m , a subpeak of the Göll massif, a 2522 m mountain in the Berchtesgaden Alps.  The rocky promontory is located west of the "Hoher Göll" main summit, high above the Obersalzberg mountain retreat near Berchtesgaden.  It is chiefly known for the Kehlsteinhaus (Eagle's Nest) mountain inn built in 1937–1938, which is a major tourist destination.

Supporting paragraphs: Werner Wolff (photographer) Kehlsteinhaus
Answer: restaurant, beer garden, and tourist site