§ 09 — Prague

The room is the city's gift
back to itself.

The Diplomat sits in Dejvice — the embassy quarter, west of the Vltava, ten minutes from Prague Castle by the Number 8 tram. The conference is one building. Sleep, talk, eat, sit in a session, walk into a corridor conversation — all without leaving the lobby's gravity.

the Diplomat Hotel Prague, the conference hotel since the inaugural edition.

Vienna House Diplomat Hotel — entrance facade at dusk, with the building's lit windows and illuminated DIPLOMAT canopy.
PL. VIII Vienna House Diplomat · entrance facade at dusk Evropská 370/15

Diplomat Hotel Prague

The principal venue for the inaugural conference and again for Edition 02. Four halls — one per track — all inside the hotel itself; the entire programme, accommodation, coffee, and quiet rooms live under one roof. A short tram ride from the historic centre, with views toward Prague Castle.

Address
Evropská 370/15
160 41 Prague 6
Tracks
Four halls
one per track
From the airport
25 min by Airport Express
or hotel shuttle
Hotel partner
Diplomat Hotel Prague
conference rate coming soon
Open in Google Maps
§ Inside

The halls, the bar, the quiet rooms.

A working hotel built around the conference, not the other way round. Coffee where the conversation is. Late check-out for talks that ran long.

The Diplomat rooftop terrace at golden hour — timber decking, bar tables, and a clear view of Prague Castle.
PL. IX The rooftop terrace · castle view

The Diplomat reads as a working European conference hotel — generous corridors, a real bar, a lobby designed for the conversations that actually advance the work.

Four halls on the ground floor. 23 meeting rooms across the building. The 9th-floor rooms open onto a roof terrace with Prague Castle in plain sight.

Three days, one building, no shuttles. The point is to keep the room with you.

400Rooms
23Meeting rooms
9Floors
3Restaurants & a bar
1990Built
2018Renovated
§ Edition Nº 01 · a voice from the room
The bar after the keynote. The corridor conversation that finished six months later. The breakfast room. One line, in their own voice — we'll set it here when it arrives.
A voice from Prague 2025 · attendee
VLTAVA Charles Bridge Prague Castle PRAŽSKÝ HRAD Old Town Square Wenceslas Square Stromovka · 1891 Letná Václav Havel Airport 25 MIN BY EXPRESS → Vienna House Diplomat PRAGUE 6 · DEJVICE ~ 10 MIN BY TRAM 8 ~ 18 MIN · METRO A N PL. IX · PRAGUE — DIPLOMAT & ITS NEIGHBOURS SCALE NOT TRUE · INDICATIVE ONLY
The Diplomat sits in Prague 6 · Dejvice — west of the Vltava, ten minutes from Prague Castle by the Number 8 tram, twenty-five minutes from Václav Havel Airport by the Express. The Old Town is one tram or twenty quiet minutes on foot through Hradčany.
§ Getting there

Three ways in, none of them long.

Prague is small and well-trammed. From your most likely landing point, you're at the Diplomat in under half an hour.

i.
From the airportVáclav Havel · VAC
Airport Express bus or a Diplomat-arranged shuttle. Pickup details coming soon.
15min
ii.
From the Old TownStaroměstské náměstí
Tram 8 or 26 direct, or Metro A (green line) two stops to Dejvická. Walking takes about an hour through Hradčany if you've got the time.
20min
iii.
From the main stationHlavní nádraží · DB · ÖBB
Metro A (green line) west, six stops to Dejvická. Walk the last 4 minutes.
22min
§ The building

Four halls, one floor.

All four rooms sit on the ground floor. Walk between tracks in under a minute. Halls assigned to tracks at the start of summer.

A
Sál Europe
PlenaryDay 01 keynote · the whole room
B
Sál Prague A
Track IICryptography
C
Sál Prague B
Track IIIEngineering
D
Sál Prague C
Track IVStandards & law

Capacities & final assignments confirmed in summer 2026.

§ Conference plan · Diplomat Hotel From the hotel
Diplomat Hotel Prague — conference-rooms ground plan
Source: Diplomat Hotel · conference facilities · full fact sheet (PDF) · our four halls confirm in summer 2026.
§ First time in Prague

Six things worth knowing before you land.

The friction-removers. Currency, language, plugs, water — the questions you'd Google anyway, answered in one strip.

§ Currency CZK · Czech crown ≈ 25 to €1
§ Language English · widely spoken Czech is local
§ Power Type E / F · 230 V EU two-prong
§ Water Tap is drinkable Soft, alkaline
§ Tipping ~10% · rounded up Hand to server
§ Transit 3-day pass · 350 CZK 340 CZK on Lítačka app
From Letná to Stromovka — Křižík's tram, 1891

§ October in Prague Days 8 — 15 °C, evenings cool. Bring a coat — and shoes you can walk cobbles in.

§ 09 — prague 6 · castle quarter · 25 min from VAC · trams 8 & 26 to old town
§ 10 — Book your stay

The Diplomat holds rooms for us. Take one.

Preferential rates for conference attendees, held until the cut-off date. Walk to your hall in under a minute. No shuttles, no taxis, no late-evening reroute through Prague traffic.

Conference rate code & cut-off date publish in early summer 2026. The hotel holds a room block for us in the meantime; mention OpenSSL Conference Edition Nº 02 when you enquire directly.

§ 10 — diplomat hotel prague · code & cut-off coming soon