This could also go in the "I'm so sorry" thread, but apparently highway, bridge, sauna+silver trashing, Seaway, and Lost Arts can make for a relatively quick megaturn ending.
There were like 3 or 4 different strategies you could have used on this board. City/Embassy, Minion, Sauna/Avanto, along with the aforementioned highway, bridge, and events. It's hard to argue with 7 provinces on turn 14, but would there have actually been a faster strategy on this board? Sorry I forgot what else was available.
Game #2795646
f starts with 7 Coppers and 3 Estates.
f shuffles their deck.
f draws 5 cards.
D starts with 7 Coppers and 3 Estates.
D shuffles their deck.
D draws 3 Coppers and 2 Estates.
Turn 1 - facet
f plays 4 Coppers.
f buys and gains a Bridge.
f draws 5 cards.
Turn 1 - Dylan32
D plays 3 Coppers.
D buys and gains a Silver.
D draws 4 Coppers and an Estate.
Turn 2 - facet
f plays 3 Coppers.
f buys and gains a Chariot Race.
f shuffles their deck.
f draws 5 cards.
Turn 2 - Dylan32
D plays 4 Coppers.
D buys and gains a Sauna.
D shuffles their deck.
D draws 3 Coppers and 2 Estates.
Turn 3 - facet
f plays a Chariot Race.
f reveals an Estate.
f puts an Estate into their hand.
D reveals a Silver.
f plays a Bridge.
f plays 2 Coppers.
f buys and gains a Bridge.
f draws 5 cards.
Turn 3 - Dylan32
D plays 3 Coppers.
D buys and gains a Silver.
D draws 3 Coppers, a Silver and a Sauna.
Turn 4 - facet
f plays 4 Coppers.
f buys and gains a Silver.
f shuffles their deck.
f draws 5 cards.
Turn 4 - Dylan32
D plays a Sauna.
D draws an Estate.
D plays a Silver.
D trashes an Estate.
D plays 3 Coppers.
D buys a Seaway.
D gains a Bridge.
D moves +Buy token to the Bridge pile.
D shuffles their deck.
D draws 3 Coppers, an Estate and a Sauna.
Turn 5 - facet
f plays 3 Coppers.
f buys and gains a Chariot Race.
f draws 5 cards.
Turn 5 - Dylan32
D plays a Sauna.
D draws an Estate.
D plays 3 Coppers.
D buys and gains a Chariot Race.
D draws 3 Coppers, a Silver and a Bridge.
Turn 6 - facet
f plays a Bridge.
f plays 2 Coppers.
f buys and gains a Vagrant and a Chariot Race.
f shuffles their deck.
f draws 5 cards.
Turn 6 - Dylan32
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays 3 Coppers and a Silver.
D buys and gains a Bridge and a Sauna.
D shuffles their deck.
D draws 2 Coppers, 2 Silvers and a Sauna.
Turn 7 - facet
f plays a Chariot Race.
f reveals a Bridge.
f puts a Bridge into their hand.
D reveals a Chariot Race.
f gets 1 VP.
f plays a Bridge.
f plays 3 Coppers and a Silver.
f buys and gains a Gold and a Chariot Race.
f draws 5 cards.
Turn 7 - Dylan32
D plays a Sauna.
D draws a Chariot Race.
D plays a Chariot Race.
D reveals a Copper.
D puts a Copper into their hand.
f reveals a Bridge.
D plays a Silver.
D trashes a Copper.
D plays a Silver.
D trashes a Copper.
D plays a Copper.
D buys and gains a Highway.
D draws a Copper, 2 Estates and 2 Bridges.
Turn 8 - facet
f plays a Chariot Race.
f reveals a Bridge.
f puts a Bridge into their hand.
D reveals a Sauna.
f plays a Chariot Race.
f reveals a Copper.
f puts a Copper into their hand.
D reveals a Sauna.
f plays a Vagrant.
f draws a card.
f reveals a Copper.
f topdecks a Copper.
f plays a Bridge.
f plays 2 Coppers.
f buys and gains a Vagrant and a Chariot Race.
f shuffles their deck.
f draws 5 cards.
Turn 8 - Dylan32
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Copper.
D buys and gains a Chariot Race.
D shuffles their deck.
D draws 3 Coppers, a Chariot Race and a Sauna.
Turn 9 - facet
f plays a Chariot Race.
f reveals a Copper.
f puts a Copper into their hand.
D reveals a Chariot Race.
f plays a Chariot Race.
f reveals a Bridge.
f puts a Bridge into their hand.
D reveals a Chariot Race.
f gets 1 VP.
f plays a Bridge.
f plays 3 Coppers.
f buys and gains a Bridge and a Chariot Race.
f draws 5 cards.
Turn 9 - Dylan32
D plays a Chariot Race.
D reveals a Chariot Race.
D puts a Chariot Race into their hand.
f reveals a Vagrant.
D gets 1 VP.
D plays a Chariot Race.
D reveals a Silver.
D puts a Silver into their hand.
f reveals a Vagrant.
D gets 1 VP.
D plays a Sauna.
D draws a Copper.
D plays a Silver.
D trashes a Copper.
D plays a Copper.
D buys and gains a Highway.
D draws a Copper, an Estate, 2 Bridges and a Sauna.
Turn 10 - facet
f plays a Chariot Race.
f reveals a Vagrant.
f puts a Vagrant into their hand.
D reveals a Silver.
f plays a Chariot Race.
f reveals a Vagrant.
f puts a Vagrant into their hand.
D reveals a Silver.
f plays a Vagrant.
f draws a card.
f reveals a Copper.
f topdecks a Copper.
f plays a Chariot Race.
f reveals a Copper.
f puts a Copper into their hand.
D reveals a Silver.
f plays a Vagrant.
f draws a card.
f reveals a Copper.
f topdecks a Copper.
f plays 2 Coppers, a Silver and a Gold.
f buys a Lost Arts.
f moves +Action token to the Bridge pile.
f shuffles their deck.
f draws 5 cards.
Turn 10 - Dylan32
D plays a Sauna.
D draws a Silver.
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Silver.
D trashes an Estate.
D plays a Copper.
D buys and gains a Highway.
D shuffles their deck.
D draws a Silver, an Estate, 2 Highways and a Sauna.
Turn 11 - facet
f plays a Chariot Race.
f reveals a Copper.
f puts a Copper into their hand.
D reveals a Copper.
f plays a Bridge.
f gets +1 Action (from Lost Arts)
f plays 3 Coppers.
f buys and gains 2 Chariot Races.
f draws 5 cards.
Turn 11 - Dylan32
D plays a Highway.
D draws a Copper.
D plays a Highway.
D draws a Bridge.
D plays a Sauna.
D draws a Chariot Race.
D plays a Chariot Race.
D reveals a Bridge.
D puts a Bridge into their hand.
f reveals a Chariot Race.
D gets 1 VP.
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Silver.
D trashes an Estate.
D plays a Copper.
D buys and gains a Bridge and 2 Highways.
D draws 2 Coppers, a Highway, a Chariot Race and a Sauna.
Turn 12 - facet
f plays a Vagrant.
f draws a card.
f reveals a Gold.
f topdecks a Gold.
f plays a Chariot Race.
f reveals a Gold.
f puts a Gold into their hand.
D reveals a Copper.
f gets 1 VP.
f plays a Chariot Race.
f reveals a Vagrant.
f puts a Vagrant into their hand.
D reveals a Copper.
f gets 1 VP.
f plays a Vagrant.
f draws a card.
f reveals a Silver.
f topdecks a Silver.
f plays a Bridge.
f gets +1 Action (from Lost Arts)
f plays a Copper and a Gold.
f buys and gains a Bridge and a City.
f draws 5 cards.
Turn 12 - Dylan32
D plays a Highway.
D draws a Copper.
D plays a Chariot Race.
D reveals a Silver.
D puts a Silver into their hand.
f reveals a Chariot Race.
D plays a Sauna.
D shuffles their deck.
D draws a Silver.
D plays a Silver.
D trashes a Copper.
D plays 2 Coppers and a Silver.
D buys a Lost Arts.
D moves +Action token to the Highway pile.
D draws 3 Bridges and 2 Highways.
Turn 13 - facet
f plays a Chariot Race.
f reveals a Chariot Race.
f puts a Chariot Race into their hand.
D reveals a Chariot Race.
f plays a Chariot Race.
f reveals a Bridge.
f puts a Bridge into their hand.
D reveals a Chariot Race.
f gets 1 VP.
f plays a Bridge.
f gets +1 Action (from Lost Arts)
f plays 3 Coppers and a Silver.
f buys and gains a Bridge and a City.
f shuffles their deck.
f draws 5 cards.
Turn 13 - Dylan32
D plays a Highway.
D gets +1 Action (from Lost Arts)
D draws a Chariot Race.
D plays a Highway.
D gets +1 Action (from Lost Arts)
D draws a Highway.
D plays a Chariot Race.
D reveals a Highway.
D puts a Highway into their hand.
f reveals an Estate.
D gets 1 VP.
D plays a Highway.
D gets +1 Action (from Lost Arts)
D draws a Sauna.
D plays a Highway.
D gets +1 Action (from Lost Arts)
D draws a Copper.
D plays a Sauna.
D shuffles their deck.
D draws a Silver.
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Bridge.
D gets +1 Buy (from Seaway)
D plays a Copper and a Silver.
D buys and gains 7 Provinces.
D draws a Copper, a Silver, a Highway, a Chariot Race and a Sauna.
Turn 14 - facet
f plays a Chariot Race.
f reveals an Estate.
f puts an Estate into their hand.
D reveals a Copper.
f gets 1 VP.
f plays a City.
f draws 2 cards.
f plays a Chariot Race.
f reveals an Estate.
f puts an Estate into their hand.
D reveals a Copper.
f gets 1 VP.
f plays a Vagrant.
f draws a card.
f reveals a Chariot Race.
f topdecks a Chariot Race.
f plays a Bridge.
f gets +1 Action (from Lost Arts)
f plays a Bridge.
f gets +1 Action (from Lost Arts)
f plays 2 Coppers.
f buys and gains 2 Estates and a Province.
f draws 5 cards.